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Giant, krill-eating whales could grow even bigger if the size and availability of their prey (猎物）could keep up，a new study finds.
Whales are the heaviest animals to have ever lived on our planet. These marine giants evolved from dog-sized four-legged land creatures and grew nearly 10,000 times bigger in the past 50 million years or so, according to Nicholas Pyenson, head of fossil marine mammals at the Smithsonian's National Museum of Natural History.
Creatures benefit from having a bigger size in a number of different ways, whether it’s not getting eaten by smaller creatures or having the ability to keep warm and travel great distances more efficiently. Still, some whale species are bigger than others, and they do have some limits to their size.
To find out what these limits are， researcher attached multisensor equipment to many types of whales. The researcher also assessed prey type and quantity using different methods. For baleen whale prey，they used acoustic(声学的) equipment to test the density (密度）of krill patches. For toothed whales, they looked at the size and quantity of squid(鱿鱼）beaks and otoliths (parts of the inner ear) found in the stomachs of beached whales.
Putting all the data together, they could determine how much energy the whales were likely to get back from the food. For toothed whales, the limiting factor seems to be the size of their prey. Sperm whales were found to feed mostly on medium-sized squid—possibly because there aren’t as many giant squid in the ocean. Baleen whales, like blue whales swallow massive mouthfuls of krill or other small creature. But these small creatures only appear in large concentrations for a few months per year in some areas ,which may be the limiting factor for the growth of the largest whales.
A researcher said that it ‘s not completely clear that baleen whales have finished growing. “Perhaps several million years into the future we’ ll see something even larger than a blue whale.”
1.What can we infer from the second paragraph?
A.Whales kept growing during evolution.
B.Whales evolved from dogs on the land.
C.Whales used to be four-legged fish.
D.The number of krill-eating whales would keep up.
2.How do whales benefit from their size?
A.They are more expert at traveling.
B.They can produce energy more easily.
C.They have better chances to survive.
D.They can be eaten by smaller creatures.
3.How did the researchers carry out the study?
A.Testing the density of whales with acoustic equipment.
B.Using different methods for different types of whales.
C.Calculating the amount of food in baleen whales’ stomachs.
D.Assessing the type and quantity of different whales.
4.What may stop whales from growing even bigger?
A.The amount of food.
B.The availability of equipment.
C.The size of their stomachs.
D.The concentrations of the whales.
英语阅读理解中等难度题查看答案及解析
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Growing mushrooms is probably the easiest thing you can do even if you are new to mushroom growing. It is becoming more common because restaurants are starting to create more dishes that include mushrooms.
Mushroom growing is easy. To start, you need to have a space where you are going to grow these mushrooms. It does not have to be a huge space but just enough for you to grow as many mushrooms as you need. When you have found the space perfect for you, you can start researching what kind of mushrooms you want to grow. There are a lot of mushrooms to choose from and not all of them are suitable to eat.
When you decide what kind of mushrooms you want to grow, you can start getting ready to plant the mushrooms. Sometimes you may want to hire some workers to help if you have a large mushroom farm, or if you are trying to start a professional mushroom growing business. Trying to have a business by yourself can be stressful. If you don’t have enough time to spend taking care of everything yourself, some helpers may the best choice.
After you have started the mushroom growing, you should regularly check that your mushrooms grow properly and that they are not being attacked by any pesticides(农药) or any other animals or something that could be dangerous to them. That is the worst part of mushroom developing. Protect your mushroom farm well with a fence or a gate so that only you and your workers can get in and out.
Mushroom growing is not difficult and It is easy to get stared in the world of farming. You will soon possibly be able to provide some of the great cooks of the world with high quality mushrooms that will be enjoyed by thousands of people all over world.
1.According to the passage, why do many people begin to plant mushrooms?
A.Because they are in great need B.Because they look very beautiful.
C.Because they are healthy food D.Because they are easy to plant
2.Which of the following is the right order of planting mushrooms?
a. Choose suitable mushrooms. b. Protect your mushrooms well.
c. Find some workers to help you. d. Start to grow the mushrooms.
e. Find a place to plant your mushrooms.
A.c—a—e—b--d B.e—a—d—b--c
C.c—a—d—b--e D.e—a—c—d--b
3.From the passage, which of the following is TRUE?
A.Pesticides can be used in mushroom growing.
B.Anyone can produce high quality mushrooms.
C.After starting, you should always take care of the mushrooms.
D.Having a mushroom business is not so difficult.
4. is the best title of the passage.
A.Healthy Mushrooms B.The Value of Mushrooms
C.Growing Mushrooms D.Suggestions on Protecting Mushrooms
八年级英语阅读单选中等难度题查看答案及解析
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“If you talk to the plants, they will grow faster and the effect is even better if you’re a woman.” Researchers at Royal Horticultural Society carried out an experient to find that the voice of a woman gardener makes plants grow faster.
The experiment lasted a month and by the end of the study scientists managed to discover that tomato plants grew up two inches taller when women gardeners talked to them instead of male.
Sarah Darwin was the one making the plants registered the best growth. Her voice was the most “inspiring” for plants than those of nine other gardeners when reading a passage from The Origin of Species. The great-great-granddaughter of the famous botanist(植物学家) Charles Darwin found that her plant grew about two inches taller than the plant of the best male gardener.
Colin Crosbie, Garden Superintendent at RHS, said that the finding cannot yet be explained. He assumes that women have a greater range of pitch（音高） and tone（音调） which might have a certain effect on the sound waves that reach the plant. “Sound waves are an environmental effect just like rain or light ,”said Mr Grosbie.
The study began in April at RHS Garden Wisley in Survey. Scientists started with open auditions(听力) for the people who were asked to record passages from John Wyndham's The Day of the Triffids, Shakespeare’s A Midsummer's Night Dream and Darwin's The Origin of Species.
Afterwards researchers selected a number of different voices and played them to 10 tomato plants during a period of a month. Each plant had headphones（耳机） connected to it. Through the headphones the sound waves could hit the plants. It was discovered that plants that “listened” to female voices on average grew taller by an inch in comparison to plants that heard male voices.
Miss Darwin said, “I think it is an honor to have a voice that can make tomatoes grow, and especially fitting because for a number of years I have been studying wild tomatoes from the Galapagos Island at the Natural History Museum in London.”
1.What does the passage talk about?
A．Plants enjoy men’s voices than women’s.
B．A botanical experiment in a museum.
C．Voice’s influence on plant growing.
D．Strange phenomenon（现象） at Royal Horticultural Society.
2.What does the underlined sentence in paragraph 4 mean?
A．Plants need sound as well as rain and light.
B．Sound is basic for the plant to grow.
C．Sound has a good effect as rain or light does.
D．Plants can’t live without sound, rain or light.
3.Sarah Darwin is most likely a (an)_____.
A．botanist
B．gardener
C．astronomer
D．environmentalist
4.What can we learn from the passage?
A．The experiment ended in May.
B．Scientist can explain the findings clearly.
C．Plants enjoy listening to the passages from masterpieces.
D．The findings are of great importance to human beings.
高一英语阅读理解简单题查看答案及解析
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“If you talk to the plants, they will grow faster and the effect is even better if you’re a woman.” Researchers at Royal Horticultural Society carried out an experiment to find that the voice of a woman gardener makes plants grow faster.
The experiment lasted a month and by the end of the study scientists managed to discover that tomato plants grew up two inches taller when women gardeners talked to them instead of male.
Sarah Darwin was the one making the plants registered the best growth. Her voice was the most “inspiring” for plants than those of nine other gardeners when reading a passage from The Origin of Species. The great-great-granddaughter of the famous botanist(植物学家) Charles Darwin found that her plant grew about two inches taller than the plant of the best male gardener.
Colin Crosbie, Garden Superintendent at RHS, said that the finding cannot yet be explained. He assumes that women have a greater range of pitch（音高） and tone（音调） which might have a certain effect on the sound waves that reach the plant. “Sound waves are an environmental effect just like rain or light ,”said Mr Grosbie.
The study began in April at RHS Garden Wisley in Survey. Scientists started with open auditions(听力) for the people who were asked to record passages from John Wyndham's The Day of the Triffids, Shakespeare’s A Midsummer's Night Dream and Darwin's The Origin of Species.
Afterwards researchers selected a number of different voices and played them to 10 tomato plants during a period of a month. Each plant had headphones（耳机） connected to it. Through the headphones the sound waves could hit the plants. It was discovered that plants that “listened” to female voices on average grew taller by an inch in comparison to plants that heard male voices.
Miss Darwin said, “I think it is an honor to have a voice that can make tomatoes grow, and especially fitting because for a number of years I have been studying wild tomatoes from the Galapagos Island at the Natural History Museum in London.”
1.What does the passage talk about?
A. Plants enjoy men’s voices than women’s.
B. A botanical experiment in a museum.
C. Voice’s influence on plant growing.
D. Strange phenomenon（现象） at Royal Horticultural Society.
2.What does the underlined sentence in paragraph 4 mean?
A. Plants need sound as well as rain and light.
B. Sound is basic for the plant to grow.
C. Sound has a good effect as rain or light does.
D. Plants can’t live without sound, rain or light.
3.Sarah Darwin is most likely a (an)_____.
A. botanist B. gardener C. astronomer D. environmentalist
4.What can we learn from the passage?
A. The experiment ended in May.
B. Scientist can explain the findings clearly.
C. Plants enjoy listening to the passages from masterpieces.
D. The findings are of great importance to human beings.
高二英语阅读理解中等难度题查看答案及解析
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“If you talk to the plants, they will grow faster and the effect is even better if you’re a woman.” Researchers at Royal Horticultural Society carried out an experiment to find that the voice of a woman gardener makes plants grow faster.
The experiment lasted a month and by the end of the study scientists managed to discover that tomato plants grew up two inches taller when women gardeners talked to them instead of male.
Sarah Darwin was the one making the plants the best growth. Her voice was the most “inspiring” for plants than those of nine other gardeners when reading a passage from The Origin of Species. The great-great-granddaughter of the famous botanist （植物学家）Charles Darwin found that her plant grew about two inches taller than the plant of the best male gardener.
Colin Crosbie, Garden Superintendent at RHS, said that the finding cannot yet be explained.He says that women have a greater range of pitch and tone（音高和音色）which might have a certain effect on the sound waves that reach the plant. “Sound waves are an environmental effect just like rain or light ,”said Mr Grosbie.
The study began in April at RHS Garden Wisley in Survey. Scientists started with open auditions(听力) for the people who were asked to record passages from John Wyndham's The Day of the Triffids, Shakespeare’s A Midsummer's Night Dream and Darwin's The Origin of Species.
Afterwards researchers selected a number of different voices and played them to 10 tomato plants during a period of a month. Each plant had headphones connected to it. Through the headphones the sound waves could hit the plants. It was discovered that plants that “listened” to female voices grew taller by an inch in comparison to plants that heard male voices.
1.What does the passage talk about?
A. Plants enjoy men’s voices than women’s.
B. A science experiment in a museum.
C. Voice’s influence on plant growing.
D. Strange findings at Royal Horticultural Society.
2.What does the underlined sentence in paragraph 4 mean?
A. Plants need sound as well as rain and light.
B. Sound is basic for the plant to grow.
C. Sound has a good effect as rain or light does.
D. Plants can’t live without sound, rain or light.
3.What can we learn from the passage?
A. The experiment ended in May.
B. Scientist can explain the findings clearly.
C. Plants enjoy listening to the passages from famous works.
D. The findings are of great importance to human beings.
高一英语阅读理解困难题查看答案及解析
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Growing mushrooms(蘑菇) is probably the easiest thing you can do even if you are new to mushroom growing. It is becoming more common because restaurants are starting to create more dishes that include mushrooms.
Mushroom growing is easy. To start, you need to have a space where you are going to grow these mushrooms. It does not have to be a huge space but just enough for you to grow as many mushrooms as you need. When you have found the space perfect for you, you can start researching what kind of mushrooms you want to grow. There are a lot of mushrooms to choose from and not all of them are suitable to eat.
When you decide what kind of mushrooms you want to grow, you can start getting ready to plant the mushrooms. Sometimes you may want to hire some workers to help if you have a large mushroom farm, or if you are trying to start a professional mushroom growing business. Trying to have a business by yourself can be stressful. If you don’t have enough time to spend taking care of everything yourself, dome helpers may be the best choice.
After you have started the mushroom growing, you should regularly check that your mushrooms grow properly and that they are not being attacked by any pesticides(农药) or any other animals or something that could be dangerous to them. That is the worst part of mushroom developing. Protect your mushroom farm well with a fence(围栏) or a gate so that only you and your workers can get in and out.
Mushroom growing is not difficult and it is easy to get stared in the world of farming. You will soon possibly be able to provide some of the great cooks of the world with high quality mushrooms that will be enjoyed by thousands of people all over the world.
1.According to the passage, many people begin to plant mushrooms probably ________.
A. because they are in great need.
B. because they look very beautiful
C. because they are healthy food
D. because they are very expensive
2.Which of the following is the right order of planting mushrooms?
a. Choose suitable mushrooms.
b. Protect your mushrooms well.
c. Find some workers to help you.
d. Start to grow the mushrooms.
e. Find a place to plant your mushrooms.
A. c—a—d—b—e B. e—a—c—d—b
C. c—a—e—b—d D. e—a—d—b—c
3.It can be inferred from the passage that __________.
A. pesticides can be used in mushroom growing
B. anyone can produce high quality mushrooms.
C. after starting, you should always take care of the mushrooms
D. having a mushroom business is not so difficult
4.The best title of the passage is __________.
A. Healthy mushrooms
B. The value of mushrooms
C. How to choose mushrooms
D. Suggestions on growing mushrooms
九年级英语阅读理解困难题查看答案及解析
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Growing mushrooms（蘑菇）is probably the easiest thing you can do even if you are new to mushroom growing. It is becoming more common because restaurants are starting to create more dishes that include mushrooms.
Mushroom growing is easy. To start, you need to have a space where you are going to grow these mushrooms. It does not have to be a huge space but just enough for you to grow as many mushrooms as you need. When you have found the space perfect for you, you can start researching what kind of mushrooms you want to grow. There are a lot of mushrooms to choose from and not all of them are suitable to eat.
When you decide what kind of mushrooms you want to grow, you can start getting ready to plant the mushrooms. Sometimes you may want to hire some workers to help if you have a large mushroom farm, or if you are trying to start a professional mushroom growing business. Trying to have a business by yourself can be stressful. If you don’t have enough time to spend taking care of everything yourself, some helpers may be the best choice.
After you have started the mushroom growing, you should regularly check that your mushrooms grow properly and that they are not being attacked by any pesticides（农药）or any other animals or something that could be dangerous to them. That is the worst part of mushroom developing. Protect your mushroom farm well with a fence（围栏）or a gate so that only you and your workers can get in and out.
Mushroom growing is not difficult and it is easy to get stared in the world of farming. You will soon possibly be able to provide some of the great cooks of the world with high quality mushrooms that will be enjoyed by thousands of people all over the world.
1. According to the passage, many people begin to plant mushrooms probably _______.
A. because they are in great need.
B. because they look very beautiful
C. because they are healthy food
D. because they are very expensive
2. Which of the following is the right order of planting mushrooms?
a. Choose suitable mushrooms. b. Protect your mushrooms well.
c. Find some workers to help you. d. Start to grow the mushrooms.
e. Find a place to plant your mushrooms.
A. c—a—d—b—e B. e—a—c—d—b
C. c—a—e—b—d D. e—a—d—b—c
3. It can be inferred（推断）from the passage that __________.
A. pesticides can be used in mushroom growing
B. anyone can produce high quality mushrooms.
C. after starting, you should always take care of the mushrooms
D. having a mushroom business is not so difficult
4. According to the passage, which sentence is NOT true?
A. Although you don’t know much about growing mushrooms, you can do it easily.
B. you can choose a suitable space, just big enough for you to grow mushrooms.
C. Some mushrooms aren’t suitable to eat.
D. The worst part of mushroom developing is to protect your mushrooms farm well with fence.
5. The best title of the passage is __________.
A. Healthy mushrooms B. The value of mushrooms
C. How to choose mushrooms D. Suggestions on growing mushrooms
九年级英语阅读理解中等难度题查看答案及解析
-
Growing mushrooms(蘑菇) is probably the easiest thing you can do even if you are new to mushroom growing. It is becoming more common because restaurants are starting to create more dishes that include mushrooms.
Mushroom growing is easy. To start, you need to have a space where you are going to grow these mushrooms. It does not have to be a huge space but just enough for you to grow as many mushrooms as you need. When you have found the space perfect for you, you can start researching what kind of mushrooms you want to grow. There are a lot of mushrooms to choose from and not all of them are suitable to eat.
When you decide what kind of mushrooms you want to grow, you can start getting ready to plant the mushrooms. Sometimes you may want to hire some workers to help if you have a large mushroom farm, or if you are trying to start a professional mushroom growing business. Trying to have a business by yourself can be stressful. If you don’t have enough time to spend taking care of everything yourself, dome helpers may be the best choice.
After you have started the mushroom growing, you should regularly check that your mushrooms grow properly and tha
t they are not being attacked by any pesticides(农药) or any other animals or something that could be dangerous to them. That is the worst part of mushroom developing. Protect your mushroom farm well with a fence(围栏) or a gate so that only you and your workers can get in and out.Mushroom growing is not difficult and it is easy to get stared in the world of farming. You will soon possibly be able to provide some of the great cooks of the world with high quality mushrooms that will be enjoyed by thousands of people all over the world.
1.According to the passage, many people begin to plant mushrooms probably ________.
A. because they are in great need.
B. because they look very beautiful
C. because they are healthy food
D. because they are very expensive
2.Which of the following is the right order of planting mushrooms?
a. Choose suitable mushrooms.
b. Protect your mushrooms well.
c. Find some workers to help you.
d. Start to grow the mushrooms.
e. Find a place to plant your mushrooms.
A. c—a—d—b—e B. e—a—c—d—b
C. c—a—e—b—d D. e—a—d—b—c
3.It can be inferred from the passage that __________.
A. pesticides can be used in mushroom growing
B. anyone can produce high quality mushrooms.
C. after starting, you should always take care of the mushrooms
D. having a mushroom business is not so difficult
4.The best title of the passage is __________.
A. Healthy mushrooms
B. The value of mushrooms
C. How to choose mushrooms
D. Suggestions on growing mushrooms
九年级英语阅读理解中等难度题查看答案及解析
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Growing mushrooms(蘑菇)is probably the easiest thing you can do even if you are new to mushroom growing. It is becoming more common because restaurants are starting to create more dishes that include mushrooms.
To start growing mushroom, you need to have a space where you are going to grow these mushrooms. It does not have to be a huge space but just enough for you to grow as many mushrooms as you need. When you have found the space perfect for you, you can start researching what kind of mushrooms you want to grow. There are a lot of mushrooms to choose from but not all of them are suitable(适合的) to eat.
When you decide what kind of mushrooms you want to grow, you can start to plant the mushrooms. Sometimes you may need some workers to help if you have a large mushroom farm or if you are trying to start a professional mushroom growing business. Trying to have a business by yourself can be stressful. If you don’t have enough time to spend taking care of everything yourself, some helpers may be the best choice.
After you have started the mushroom growing, you should regularly check your mushrooms grow properly and that they are not being attacked by any pesticides(农药)or any other animals or something that could be dangerous to them. That is the worst part of mushroom developing. Protect your mushroom farm well with a fence(围栏)or a gate so that only you and your workers can get in and out.
It is easy to get started in the world of farming by growing mushrooms. You will soon possibly be able to provide some of the great cooks of the world with high quality mushrooms that will be enjoyed by thousands of people all over the world.
1.Why do many people begin to plant mushrooms according to the passage?
A. Because they are healthy food.
B. Because they are in great need.
C. Because they are very expensive.
D. Because they look very beautiful.
2.What should you do after choosing suitable mushrooms ?
A. Protect your mushrooms well.
B. Start to grow the mushrooms.
C. Find some workers to help you.
D. Find a place for your mushrooms.
3.What can be inferred(推断)from the passage?
A. Pesticides can be used in mushroom growing.
B. Anyone can produce high quality mushrooms.
C. Having a mushroom business can be kind of difficult.
D. All the mushrooms can be cooked into delicious dishes.
4.What is the best title of the passage?
A. How to cook mushrooms?
B. How to protect mushrooms?
C. How to choose mushrooms?
D. How to grow mushrooms?
九年级英语阅读理解简单题查看答案及解析
-
Growing mushrooms（蘑菇）is probably the easiest thing you can do even if you are new to mushroom growing. It is becoming more common because restaurants are starting to create more dishes that include mushrooms.
Mushroom growing is easy. To start, you need to have a space where you are going to grow these mushrooms. It does not have to be a huge space but just enough for you to grow as many mushrooms as you need. When you have found the space perfect for you, you can start researching what kind of mushrooms you want to grow. There are a lot of mushrooms to choose from and not all of them are suitable to eat.
When you decide what kind of mushrooms you want to grow, you can start getting ready to plant the mushrooms. Sometimes you may want to hire some workers to help if you have a large mushroom farm, or if you are trying to start a professional mushroom growing business. Trying to have a business by yourself can be stressful. If you don’t have enough time to spend taking care of everything yourself, some helpers may be the best choice.
After you have started the mushroom growing, you should regularly check that your mushrooms grow properly and that they are not being attacked by any pesticides（农药）or any other animals or something that could be dangerous to them. That is the worst part of mushroom developing. Protect your mushroom farm well with a fence（围栏）or a gate so that only you and your workers can get in and out.
Mushroom growing is not difficult and it is easy to get stared in the world of farming. You will soon possibly be able to provide some of the great cooks of the world with high quality mushrooms that will be enjoyed by thousands of people all over the world.
1.According to the passage, many people begin to plant mushrooms probably _________.
A．because they are in great need. B．because they look very beautiful
C．because they are healthy food D．because they are very expensive
2.Which of the following is the right order of planting mushrooms?
a. Choose suitable mushrooms. b. Protect your mushrooms well.
c. Find some workers to help you. d. Start to grow the mushrooms.
e. Find a place to plant your mushrooms.
A．c—a—d—b—e B．e—a—c—d—b C．c—a—e—b—d D．e—a—d—b—c
3.It can be inferred（推断）from the passage that __________.
A．pesticides can be used in mushroom growing
B．anyone can produce high quality mushrooms.
C．after starting, you should always take care of the mushrooms
D．having a mushroom business is not so difficult
4.According to the passage, which sentence is NOT true?
A．Although you don’t know much about growing mushrooms, you can do it easily.
B．you can choose a suitable space, just big enough for you to grow mushrooms.
C．All mushrooms aren’t suitable to eat.
D．The worst part of mushroom developing is to protect your mushrooms farm well with fence.
5.The best title of the passage is __________.
A．Healthy mushrooms B．The value of mushrooms
C．How to choose mushrooms D．Suggestions on growing mushrooms
九年级英语阅读理解中等难度题查看答案及解析
t they are not being attacked by any pesticides(农药) or any other animals or something that could be dangerous to them. That is the worst part of mushroom developing. Protect your mushroom farm well with a fence(围栏) or a gate so that only you and your workers can get in and out.