Ocean water is full of salt(盐)— and salt water can hold up(支撑)more weight than fresh water.(淡水)See for yourself!
You Will Need:
● 3 cups of warm water
● Measuring cup
● Wide-mouthed jar
● Salt
● Spoon(勺子)
● Raw potato
You Will Do:
1.Pour 1.5 cups of warm water into the jar.
2. Add 1/3 cup of salt.
3. Stir(搅拌) until the salt is completely dissolved.(溶解)
4. Add another 1.5 cups of water. Pour it slowly over the back of the spoon into the jar so that the two liquid(液体) will not mix together.
5. Gently place the potato into the jar. Do not drop it.
What Will Happen:
The potato will sink(下沉)— but only halfway!
Why?
Salt water is heavier than fresh water, so it will stay on the bottom. The fresh water will remain on top.
The potato is heavier than the fresh water, but it is lighter than the salt water. That is why the potato will sink halfway down.
1.In which step of the experiment do you add the salt?
A. Step 1. B. Step 2.
C. Step 3. D. Step 4.
2.In Step 4 of the experiment, why do you pour the water over the spoon “slowly”?
A. It is easier to see what you are doing.
B. It pushes the fresh water to the bottom.
C. It will keep the water from coming out.
D. It will keep the liquids from mixing together.
3.In the experiment, what should you do right after you pour the water over the spoon?
A. Add the salt to the water. B. Stir the salt into the water.
C. Place the potato in the jar. D. Pour warm water into the jar.
高一英语阅读理解中等难度题
Ocean water is full of salt(盐)— and salt water can hold up(支撑)more weight than fresh water.(淡水)See for yourself!
You Will Need:
● 3 cups of warm water
● Measuring cup
● Wide-mouthed jar
● Salt
● Spoon(勺子)
● Raw potato
You Will Do:
1.Pour 1.5 cups of warm water into the jar.
2. Add 1/3 cup of salt.
3. Stir(搅拌) until the salt is completely dissolved.(溶解)
4. Add another 1.5 cups of water. Pour it slowly over the back of the spoon into the jar so that the two liquid(液体) will not mix together.
5. Gently place the potato into the jar. Do not drop it.
What Will Happen:
The potato will sink(下沉)— but only halfway!
Why?
Salt water is heavier than fresh water, so it will stay on the bottom. The fresh water will remain on top.
The potato is heavier than the fresh water, but it is lighter than the salt water. That is why the potato will sink halfway down.
1.In which step of the experiment do you add the salt?
A. Step 1. B. Step 2.
C. Step 3. D. Step 4.
2.In Step 4 of the experiment, why do you pour the water over the spoon “slowly”?
A. It is easier to see what you are doing.
B. It pushes the fresh water to the bottom.
C. It will keep the water from coming out.
D. It will keep the liquids from mixing together.
3.In the experiment, what should you do right after you pour the water over the spoon?
A. Add the salt to the water. B. Stir the salt into the water.
C. Place the potato in the jar. D. Pour warm water into the jar.
高一英语阅读理解中等难度题查看答案及解析
As is known to all,the water in the sea______much salt.
A.holds | B.contains | C.includes | D.covers |
高一英语单项填空中等难度题查看答案及解析
The basin _______ water soon. You can’t pour more in.
A.is full with | B.fills with | C.is filled of | D.is filled with |
高一英语单项填空简单题查看答案及解析
Put the cleaned fish in a mixture of 300g of salt and one liter of water to ________ all of the blood from the fish meat.
A.replace B.remove C.calculate D.spoil
高一英语单项填空中等难度题查看答案及解析
Tears clouded my eyes as I stood in our washing room, holding Brett’s jeans and shirt full of burn holes.
Tired and defeated, I _______ to the floor. The clothes were just one more thing Brett had_______ . He often got almost everything in the house out of _______ . Many windows in our house needed repair due to his breaking _______ to steal money when he chose to live on the street. Yet none of this could compare to the emotional _______ Brett had done to our once quiet home.
Brett came to live with us when he was 12 years old. During the next few years I had dealt with Brett as _______as possible, but inside I was shouting. “I don’t want him in my house another day, Lord! I just can’t _______ him!” Having wiped my tears, I continued _______ him as before.
When Brett was nearly 18, he landed again in Juvenile Hall(少管所). After that, my husband and I had to send Brett to a boarding school for helping _______teens.
At the ________ ceremony, each graduate held a white rose to give to the person who had ________ the most to him or her.
Brett spoke __________ to his parents and then spoke to me, “You did so much. You were always there, no matter __________ . My mom and dad, I was their kid. But you, ________ troubled enough by me, always ____________ me such love. And I want you to know I love you for it.”
________, I stood as Brett placed the white rose in my hand and hugged me__________.
At that moment, tears__________ in my eyes again, this time not for disappointment but for________. Although I had struggled with silent __________toward my stepson, Brett had seen only my actions. Love is action. We may not always have positive feelings about certain people in our lives, but we can love them.
1.A. sat B. sank C. bent D. dropped
2.A. ruined B. lost C. torn D. broken
3.A. danger B. place C. trouble D. order
4.A. off B. in C. up D. away
5.A. pain B. injury C. damage D. wound
6.A. patiently B. willingly C. strictly D. rudely
7.A. forgive B. educate C. stand D. control
8.A. parenting B. pardoning C. comforting D. feeding
9.A. lazy B. troublesome C. disappointing D. careless
10.A. opening B. official C. victory D. graduation
11.A. afforded B. meant C. supplied D. owed
12.A. lovingly B. sadly C. proudly D. nervously
13.A. where B. how C. what D. who
14.A. unless B. although C. because D. when
15.A. cost B. lent C. taught D. showed
16.A. Astonished B. Puzzled C. Encouraged D. Interested
17.A. surely B. roughly C. tightly D. fiercely
18.A. fell B. flowed C. moved D. gathered
19.A. pity B. happiness C. luck D. success
20.A. love B. anxiety C. anger D. care
高一英语完形填空中等难度题查看答案及解析
She dreams of ___________ the ocean some day, where she can enjoy all kinds of fish and underwater plants.
A. exploring B. consulting C. affecting D. employing
高一英语单项填空简单题查看答案及解析
C
Life can be so wonderful, full of adventure and joy. It can also be full of challenges, setbacks(挫折)and heartbreaks. Whatever our circumstances, we generally still have dreams, hopes and desires — that little something more we want for ourselves and our loved ones. Yet knowing we can have more can also create a problem, because when we go to change the way we do things, up come the old patterns and pitfalls(陷阱)that stopped us from seeking what we wanted in the first place.
This tension between what we feel we can have and what we’re seemingly able to have is the niggling(烦人的) suffering, the anxiety we feel. This is where we usually think it’s easier to just give up. But we’re never meant to let go of the part of us that knows we can have more. The intelligence behind that knowing is us — the real us. It’s the part that believes in life and its possibilities. If you drop that, you begin to feel a little "dead" inside because you’re dropping "you".
So, if we have this capability but somehow life seems to keep us stuck, how do we break these patterns?
Decide on a new course and make one decision at a time. This is good advice for a new adventure or just getting through today’s challenges.
While, deep down, we know we can do it, our mind — or the minds of those close to us — usually says we can’t. That isn’t a reason to stop, it’s just the mind, that little man or woman on your shoulder, trying to talk you out of something again. It has done it many times before. It’s all about starting simple and doing it now.
Decide and act before overthinking. When you do this you may feel a little, or large, release from the jail of your mind and you’ll be on your way.
1. It can be inferred from the first two paragraphs that we should ___________.
A. slow down and live a simple life B. be careful when we choose to change
C. stick to our dreams under any circumstances D. be content with what we already have
2. What is the key to breaking the old patterns?
A. To focus on every detail. B. To decide and take immediate action.
C. To listen to those close to us. D. To think twice before we act.
3. Which of the following best explains the underlined part in the last paragraph?
A. Punishment for your action. B. Realization of your dreams.
C. Freedom from your tension. D. Reduction of your expectations.
4.What does the author intend to tell us?
A. It’s easier than we think to get what we want.
B. It’s important to learn to accept sufferings in life.
C. It’s impractical to change our way of thinking.
D. It’s harder than we expect to follow a new course.
高一英语阅读理解中等难度题查看答案及解析
In summer, millions of people will head for the beach.And while the ocean can be a great place to swim and play, it may also be useful in another way.Some scientists think that waves could help make electricity.
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland.“There is certainly a lot of energy in waves.”
Scientists are working on using that energy to make electricity.
Most waves are created when winds blow across the ocean.“The winds start out by making little ripples (波纹) in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ”Taylor said.“Waves are one of nature’s ways of picking up energy and then sending it off on a journey.”
When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine (涡轮) .The turbine can then power an electrical generator (发电机) .
The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland.
The resource is huge.We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal.
Oceans cover three quarters of the earth’s surface.That would make wave power seem perfect for creating energy around the world.There are some drawbacks, however.
Jamie Taylor said that wave power still cost too much money.He said that its effects on animals in the sea were still unknown.Besides, wave power would get in the way of fishing and boat traffic.
With more research, however, “many of these problems might be overcome,” Taylor said.“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world.Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day.”
In the future, when you turn on a light switch, an ocean wave could be providing the electricity!
1.We can infer from the passage that ______.
A. finding new energy sources like wave energy is important
B. wave energy is a resource that will never run out and is used all over the world
C. wave power is perfect for creating energy around the world
D. wave power doesn’t create any pollution
2.The underlined word “drawbacks” probably means ______.
A. regrets B. adventures C. disadvantages D. difficulties
3.What can be the best title for the passage?
A. How to Get Electricity by Waves.
B. A Huge Resource of Energy.
C. Can Waves Make Electricity?
D. The Disadvantages of Wave Energy.
高一英语阅读理解中等难度题查看答案及解析
In summer, millions of people will head for the beach.And while the ocean can be a great place to swim and play, it may also be useful in another way.Some scientists think that waves could help make electricity.
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland.“There is certainly a lot of energy in waves.”
Scientists are working on using that energy to make electricity.
Most waves are created when winds blow across the ocean.“The winds start out by making little ripples (波纹) in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ”Taylor said.“Waves are one of nature’s ways of picking up energy and then sending it off on a journey.”
When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine (涡轮) .The turbine can then power an electrical generator (发电机) .
The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland.
The resource is huge.We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal.
Oceans cover three quarters of the earth’s surface.That would make wave power seem perfect for creating energy around the world.There are some drawbacks, however.
Jamie Taylor said that wave power still cost too much money.He said that its effects on animals in the sea were still unknown.Plus, wave power would get in the way of fishing and boat traffic.
With more research, however, “many of these problems might be overcome,” Taylor said.“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world.Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day.”
In the future, when you turn on a light switch, an ocean wave could be providing the electricity!
1.Which of the following is NOT true?
A.Wave power doesn’t cost too much money.
B.Wave energy is so clean that it doesn’t create the same amount of pollution as other energy sources.
C.Wave power affects fishing and boat traffic.
D.Wave power may affect marine animals.
2.We can infer from the passage that ______.
A.finding more new energy sources is not necessary because of wave energy
B.wave energy is a resource that will never run out and is used all over the world
C.wave power is not quite perfect for creating energy around the world
D.wave power doesn’t create any pollution
3.The underlined word “drawbacks” probably means ______.
A.regrets B.adventures C.disadvantages D.difficulties
4.What can be the best title for the passage?
A.How to Get Electricity by Waves B.The advantages of Wave Energy
C.Can Waves Make Electricity? D.The Disadvantages of Wave Energy
高一英语阅读理解中等难度题查看答案及解析
In this lecture, I can only give you a purely _view of how we can live life to the full and make some suggestions about the future.
A.progressive B.personal C.unique D.popular
高一英语单项填空中等难度题查看答案及解析