Many scientists believe that robots will be a...

Many scientists believe that robots will be able to ________ like humans in 50 years.

A.ask B.say C.talk D.tell

七年级英语单选题简单题查看答案及解析

极端气候频发

Nowadays, as the world's climate changes, extreme weather is becoming more and more. For example, in Britain, there　 1. (be) very few tornadoes(龙卷风) in the past. But now, there are more than 50 tornadoes a year. Tornadoes look fascinating on the TV, but it is very　 2.(danger) to humans. However, tornadoes are j3. one sign of the world's climate changes. In many 4. (country), there are more floods. In some other places, it is much　 5.(hot) than before in summer. W6. do these happen? Because the global temperatures are rising.

However, scientists still don't know enough about the reasons. Some believe the climate changes naturally. But most scientists think the real reason is human activity, such as cutting 7. trees, driving cars too much and so on. I8. we cannot stop the temperatures from increasing, the ice will melt completely one day. As 9. result, sea levels will rise and many islands will disappear forever. So we should work together　 to save the earth, and to save　 10. (we)．

七年级英语语法填空中等难度题查看答案及解析

-- I believe Jack will be able to pass the driving test next week.

-- _______. He practices driving every day.

A.I think so B.I am afraid not C.It sounds very interesting D.I’m glad you like it

七年级英语单选题简单题查看答案及解析

Nowadays, as the world's climate changes, extreme weather is becoming more and more. For example, in Britain,1.are more than 50 tornadoes a year now. However, tornadoes are just one sign of the world's climate changes. In many countries, there are more floods. In some other places, it2. much hotter than before in summer. Why do these happen? Because the global temperatures are rising.

However, scientists still don't know enough 3. reasons. Some believe the climate changes naturally. But most scientists think the real reason is human activities, such as cutting down trees, driving cars too much and so on. If we can not stop the temperatures from increasing,4. ice will melt completely one day. As a result, sea levels will rise and many islands will disappear forever. So we 5. work together to save the earth, and to save ourselves. Let's take action now!

Word Bank

tornado龙卷风

七年级英语语法填空困难题查看答案及解析

In the future, robots will________help people do many things, such as washing and cooking.

A.be late for B.be ready to C.be able to D.be good at

七年级英语单选题简单题查看答案及解析

Can trees talk? Yes-but not in words. Scientists have reasons to believe that trees do communicate with each other. Not long ago, researchers learned some surprising things. First a willow tree(柳树) attacked in the woods by caterpillars (毛毛虫) changed the chemistry of its leaves and made them taste so terrible that the caterpillars got tired of the leaves and stopped eating them. The even more astonishing, the tree sent out a special vapor-a signal causing its neighbors to change the chemistry of their own leaves and make them less tasty.

Communication, of course, doesn’t need to be always in words. We can talk to each other by smiling, raising our shoulders and moving our hands. We know that birds and animals use a whole vocabulary of songs, sounds, and movements. Bees dance their signals, flying in certain patterns that tell other bees where to find nectar(花蜜) for honey. So why shouldn’t trees have ways of sending messages?

1.When attacked, a window tree will protect itself by ________.

A. changing its leaves’ chemistry　　 B. changing its leaves’ colour

C. talking to caterpillars　　 D. sending out a special vapour

2.From the passage we know that caterpillars _________.

A. like willow trees　　 B. enjoy eating fallen leaves

C. feed on willow tree leaves　　 D. could communicate with willow trees

3.Caterpillars will stop eating willow trees leaves which   __________   .

A. have a chemical change and become tasteless　　 B. have a pleasant taste

C. are being attacked　　 D. are communicating

4.According to the passage, how do willow trees communicate with each other ?

A. They talk in words.　　 B. They send out a special vapour.

C. They wave their leaves.　　 D. they make special sounds.

七年级英语阅读单选困难题查看答案及解析

Brooke wanted a dollhouse and some sugar cookies. So he asked Alexa to get them. It was a voice-activated home assistant powered by AI. A few days later, a $170 dollhouse and four pounds of cookies showed up.

Alexa isn't the only AI willing to serve you. Apple HomePod has Siri, and the upcoming Galaxy Home device will have Bixby. People who have these devices use them mainly for listening to music, checking the weather, and setting timers. According to a report from The Information, nowadays voice shopping is rare. But many scientists predict a boom in voice shopping in the near future.

Convenience is the main advantage of voice shopping. You can shout out an order as soon as you think of it. In addition, people with disabilities who are unable to use a keyboard or mouse can shop without any help.

But voice shopping has its disadvantages. Unwanted dollhouses aren't the biggest problem. It's usually very easy to cancel an order or return products. The thing that worries some people is that these assistants are always listening. They have to be able to respond when you want them. Some have worried about what happens to these recordings. The CIA found a way to hack smart TVs to turn them into spies that listen. Others could do the same with any smart device. What do you think? Are you ready to start voice shopping?

1.From the passage, we know that Alexa ________.

A.can look after the baby B.can cook delicious food

C.is a toy doll sold online D.is one kind of AI device

2.What does the underlined word "rare" mean in Chinese?

A.罕见的 B.昂贵的 C.有害的 D.不可能的

3.What's the main advantage of voice shopping?

A.Its speed. B.Its price. C.Its quality. D.Its convenience.

4.Which paragraph tells us that personal information might be hacked when people try voice shopping?

A.Paragraph 1. B.Paragraph 2. C.Paragraph 3. D.Paragraph 4.

5.What's the best title for the text?

A.The Advantages and Disadvantages of Voice Shopping

B.The Voice-activated Home Assistant—Alexa

C.The Convenience of AI

D.Brooke's Wishes

七年级英语阅读单选困难题查看答案及解析

You must think a computer is the best thing in the world, right? You must think it works at a super speed and can do everything?　 Well, it's not! In fact, the brain is much more powerful than any super computer! Think about when a glass is just about to fall off the table. Your brain controls everything that you need to do to save that glass from falling. First your eyes check out what's going on, then tell your brain, and your brain decides how quickly you need to react(反应), and then your muscles(肌肉)　 go into action.　 That is just from your brain. No computer could ever come close to that!

The brain weighs just 3 pounds, but it controls everything you do from thinking, learning, feeling even to breathing and your heart beating. Even though the brain is just 2% of your body weight, it uses around 20% of all your energy in your body. That is a lot for such a small organ(器官). There are about 100 billion tiny, tiny little cells(细胞) in your brain. There are so many that it would take you over 3, 000 years to count them all!

Your brain stops growing when you're 18, but it actually keeps on developing and learning new things. So your parents are really super smart! You won't be able to fool them! Believe it or not, your brain NE­VER stops working. Even during sleeping, the brain works for long­term memory establishment.　 It is realized that the brain is the second organ in the body as the heart that never stops during human lives.

So everyone should be proud of such a gift of nature.

1.From the first paragraph we know that ________.

A.eyes and muscles react quickly

B.the brain controls everything in your body

C.the computer is the best thing in the world

D.the brain is more powerful than any computer

2.Which of the following is TRUE according to the passage?

A.The brain doesn't work during sleeping.

B.The brain is the only organ that never stops.

C.The brain keeps growing during human lives.

D.The brain keeps on developing during human lives.

3.In which magazine can the passage be found most probably?

A.Business Weekly B.Medicine C.Science D.Sports

4.The underlined word“establishment”in the passage means“________” in Chinese.

A.储存 B.形成 C.空缺 D.建立

5.The best title for this passage is “________”．

A.A Powerful Organ—Human Brain

B.How Computers Work

C.Scientists' Research

D.Human Being's Activities

七年级英语阅读单选中等难度题查看答案及解析

Brooke wanted a dollhouse and some sugar cookies. So the 6­year­old Brooke asked Alexa to get them. It was a voice­activated home assistant powered by AI. And it made Brooke's wishes come true.

Alexa isn't the only AI willing to serve you. Apple Homepod has Siri, Google Home has its Assistant, and the upcoming Galaxy Home device will have Bixby. People who have these devices use them mainly for listening to music, checking the weather, and setting timers. According to a report from The Information, nowadays voice shopping is rare. But many scientists predict a boom in voice shopping in the near future.

Convenience is the main advantage of voice shopping. You can shout out an order as soon as you think of it, even if you are cooking, cleaning, or driving.

But voice shopping has its disadvantages. Unwanted dollhouses aren't the biggest problem. It's usually very easy to cancel an order or return products. The thing that worries some people is that these assistants are always listening. They have to be able to respond when you want them. So they listen for “Alexa” or “OK Google” or another order. When they hear it, they start recording the conversation. Some have worried about what happens to these recordings. Should companies be allowed to use them to learn about people's shopping habits? And what if someone hacks the device? The CIA found a way to hack smart TVs to turn them into spies that listen all the time. Others could do the same with any smart device.

What do you think? Are you ready to start voice shopping?

1.From the passage, we know that Alexa ________．

A.can look after the baby

B.can cook delicious food

C.is a toy doll sold online

D.is one kind of AI device

2.What does the underlined word “rare” mean in Chinese?

A.罕见的 B.昂贵的 C.有害的 D.不可能的

3.What's the main advantage of voice shopping?

A.Its speed. B.Its price.

C.Its quality. D.Its convenience.

4.Which paragraph tells us that personal information might be recorded when trying voice shopping?

A.Paragraph 1. B.Paragraph 2.

C.Paragraph 3. D.Paragraph 4.

5.What is the best title for the passage?

A.The advantages and disadvantages of voice shopping

B.The voice­activated home assistant—Alexa

C.The convenience of AI

D.Brooke's wishes

七年级英语阅读单选中等难度题查看答案及解析

In China, giant pandas are considered a national treasure. People make a great effort to protect them. Now, the black­and­white bears that live in the wild are going to be given a big new “home”. China is creating a reserve for them. The reserve will cover an area of 27,134 square kilometers.

Around 1,864 pandas now live in the wild. Their main threat is the loss of habitat (栖息地). The new park will link up 67 existing panda reserves across Gansu, Shaanxi and Sichuan. Scientists hope the effort will help the pandas get together, find mates (配偶) and produce babies. And the park will not just protect the giant pandas. It will also help protect more than 8,000 endangered animals and plants in the area.

Chinese scientists have tried many ways to protect the giant pandas. They have also spent a lot of time researching how they breed(繁殖). Their main aim is to increase the number to 2,000 by 2025. Hou Rong is the director of the Chengdu Research Base for Giant Panda Breeding (成都大熊猫繁育研究基地). He said the new park would be a great place for all kinds of animals and plants to live in. “Many scientists and experts support the building of a national park,” he added.

David Wildt is an experienced biologist from the United States. He said China had done a good job on protecting pandas. Experience in the past had shown how much a national park could do for a country. “Now,_it's_time_to_see_if_the_same_method_will_work_in_China,” he added.

1.完成句子 In China, people make ________________ to protect giant pandas.

2.简略回答问题How many pandas are living in the wild now?

________________________________________________________________________

3.简略回答问题What's the main aim of Chinese scientists to protect the giant pandas?

________________________________________________________________________

4.找出并写下第三段的主题句________________________________________________________________________

5.将文中画线句子译成汉语________________________________________________________________________

七年级英语多任务混合问题困难题查看答案及解析