Put an ice cube from your fridge into a glass...

Put an ice cube from your fridge into a glass of water. You have a piece of string(线) 10 centimeters long. The problem is to take out that piece of ice with the help of the string. But you must not touch the ice with your fingers.

You may ask your friends to try to do that when you are having dinner together. There is a saltcellar on the table. You must use salt when you carry out this experiment.

First you put the string across the piece of ice. Then put some salt on the ice. Salt makes ice melt(融化). The ice round the string will begin to melt. But when it melts, it will lose heat. The cold ice cube will make the salt water freeze again.

After a minute or two you may raise the piece of string and with it you will raise your piece of ice!

This experiment can be very useful to you. If, for example, there is ice near the door of your house, you must use very much salt to melt all the ice. If you don’t put enough salt, the water will freeze again.

61. We must use _______ when we carry out this experiment.

A. fridge             B. some food                   C. a table     D. some salt

62. How long will it take to carry out this experiment?

A. More than three minutes.           B. Five minutes or so.

C. Only one minute or two.               D. About ten minutes.

63. What is the task of this experiment?

A. Put the ice cube into the glass of water with the help of the string.

B. Take out the ice cube in the glass of water with the help of the string.

C. Take out the ice cube in the glass of water with your fingers.

D. Put some salt on the ice cube and then put the string across it.

64. How many things at least are used in this experiment?

A. Three.              B. Four.                    C. Six.                  D. Seven.

65. We can learn something about _______ from the passage.

A. physics          B. biology         C. chemistry        D. maths

高一英语阅读理解简单题查看答案及解析

Put an ice cube from your fridge into a glass of water. You have a piece of string(线) 10 centimeters long. The problem is to take out that piece of ice with the help of the string. But you must not touch the ice with your fingers.

You may ask your friends to try to do that when you are having dinner together. There is a saltcellar on the table. You must use salt when you carry out this experiment.

First you put the string across the piece of ice. Then put some salt on the ice. Salt makes ice melt(融化). The ice round the string will begin to melt. But when it melts, it will lose heat. The cold ice cube will make the salt water freeze again. After a minute or two you may raise the piece of string and with it you will raise your piece of ice!

This experiment can be very useful to you. If, for example, there is ice near the door of your house, you must use very much salt to melt all the ice. If you don’t put enough salt, the water will freeze again.

1. We must use _______ when we carry out this experiment.

A. fridge             B. some food                   C. a table     D. some salt

2. How long will it take to carry out this experiment?

A. More than three minutes.           B. Five minutes or so.

C. Only one minute or two.                   D. About ten minutes.

3.What is the task of this experiment?

A. Put the ice cube into the glass of water with the help of the string.

B. Take out the ice cube in the glass of water with the help of the string.

C. Take out the ice cube in the glass of water with your fingers.

D. Put some salt on the ice cube and then put the string across it.

4.How many things at least are used in this experiment?

A. Three.              B. Four.                    C. Six.                  D. Seven.

5.We can learn something about _______ from the passage.

A. physics          B. biology         C. chemistry        D. maths

高一英语阅读理解简单题查看答案及解析

Grab an ice cube from the freezer and place it on a table. Watch closely enough and you will see, well, not much at all. The ice cube is absorbing heat, but it is still an ice cube. Before it melts, it will draw heat from the environment to change from solid to liquid. Only then will it begin to slip and slide in a puddle(水坑) of its own making.

And so to A Word Without Ice by Henry Pollack, retired professor of geophysics at the University of Michigan and a member of the Intergovernmental Panel on Climate Change (IPCC) that shared the 2007 Nobel peace prize with Al Gore.

The book gets off to a slow start. You may have to work a little before being rewarded. But given time, Pollack's account warms up and really takes off. The story he has to tell is fascinating, frightening and important.

Despite the title, this is not a book about the world without ice. Much is given over to the impact of ice in Earth's long history, as an important force that shaped our planet's landscape, controlled migrations and influenced cultures. Pollack takes us through Antarctic and Arctic explorations, the natural cycles that bring us ice ages and milder periods without extremes of heat or cold, and the rise of climate science which, among other achievements, can recreate a history of the temperature on Earth from kilometers of ice core drilled from the polar caps.

Pollack’s intellectual power and clarity of phrase are invaluable in describing the scientific evidence for global warming, the ways in which it will affect the world, and the all-too-probable consequences. Pollack is not one to brush awkward issues under the carpet. There is serious discussion about uncertainties in climate science, and in particular, the computer models used to forecast future warming. For its forensic analysis (取证分析) and strong destruction of climate sceptic (怀疑论者) arguments alone, A World Without Ice is worth keeping on a nearby shelf.

Some readers may find Pollack's US-centric approach occasionally grating (刺耳的). He tells of intense irrigation in southwestern Kansas, IPCC reports as big as several New York City phone directories and school-day stories from Omaha. But this is forgivable. The US is uniquely placed to act on climate change but faces a significant barrier in the shape of the outdated, influential, oil-funded anti-climate change lobby (游说议员的团体).

Thoughtful throughout, Pollack occasionally delivers paragraphs that stay with you long after closing the book. On the subject of the book itself, he writes: "Nature's best thermometer (温度计), perhaps its most sensitive and unambiguous indicator of climate change, is ice. When ice gets sufficient warm, it melts. Ice asks no questions, presents no arguments, reads no newspapers, listens to no debates. It is not burdened by ideology and carries no political baggage as it crosses the threshold (门槛) from solid to liquid. It just melts."

A World Without Ice is a call to arms. Debates about which mitigation (减缓) strategies might give us the best chances of reducing our emissions miss the point, Pollack says. If we want to avoid the worst that climate change may bring, we need "every hose in the stable pulling together and as hard and as fast a possible".

Pollack's argument is attractive, persuasive and deeply upsetting, no matter the climate change tiredness that unavoidably sets in as a consequence of endless media coverage of global warming. The author's final warning comes from Lao Tzu, an ancient Chinese philosopher: “If you do not change direction, you may end up where you are heading.

Pollack leaves us in no doubt as to where that is.

1.We can learn that A World Without Ice 　　　 .

A.brings us to the core of the issue at the very beginning

B.convinces skeptics of the truth about climate change

C.gives an in- depth analysis of global warming

D.gets funded by anti -climate change lobby

2.Why does Henry Pollack think ice is nature's best thermometer?

A.Ice is a reminder of peaceful co- existence.

B.Ice is a common topic of the media coverage.

C.Ice is a controversial issue in political debates.

D.Ice is a clear indicator sensitive to climate change.

3.The underlined sentence in Paragraph 8 probably means the book　　　 .

A.urges us to make joint efforts to fight climate change

B.advocates addressing climate change by armed forces

C.recommends debating on strategies to reduce emission

D.calls for separate and tough actions in a timely manner

4.What does the underlined word “that" in the last paragraph refer to?

A.Warning from Lao Tzu. B.Destination of a journey.

C.Effect of global warming. D.Argument on climate change.

5.What's the author's attitude toward A World Without Ice?

A.Ambiguous. B.Positive. C.Cautious. D.Sceptical.

高一英语阅读理解中等难度题查看答案及解析

Sometimes, you do not finish drinking your glass of water before you go to bed. 1.

But have you ever wondered if it is still safe to drink?

“If you have clean water in a clean glass, you’re fine to drink it for a day or two,” Kellogg Schwab from the Johns Hopkins University Water Institute in the US told Time.

2. That’s because after about 12 hours, the carbon dioxide (二氧化碳) in the air reacts（反应）with the water in your glass, slightly lowering its pH level.

Also, there might be more microorganisms (微生物) in your water if you leave it out overnight. Microorganisms grow more quickly at room temperature. These microorganisms can stay on your glass. 3. But as long as you clean your glasses very often, this will not be a problem.

In countries like the US and UK, people often drink water directly from the tap (水龙头).4. Most experts say that tap water has a shelf life of six months, according to Zane Satterfield from West Virginia University, US. After six months, there is less chlorine (氯) in the water and bacteria (细菌) start to grow. You’d better not drink the water otherwise you may get sick.

5. Schwab said people should be careful with them. If you leave a bottle of water under the sun or in a car for a long period of time, the plastic produces a chemical called BPA. This chemical can cause heart disease and cancer.

A.What about plastic water bottles?

B.They can make you get sick more easily.

C.Is it safe for you to drink the water later?

D.But you may find that it tastes strange.

E.Some people prefer to drink water from rivers.

F.You might want to drink it the next morning.

G.This is OK—however, tap water cannot be stored for a long time.

高一英语七选五中等难度题查看答案及解析

What do you use your fridge for: It can not only keep your food cold, but also make ice and freeze food. But in the future smart fridges may do much more than you can think. They may tell you what food is inside, what food you need, what food is healthy for you, and even shop for you, too!

Some companies are making online fridges which have a computer screen on the door. And it can be very useful that the computer is linked to a supermarket through the Internet. For example, when you finish your orange juice, you can put the empty juice carton (纸盒包装) near the computer screen. The computer reads the bar code on the juice carton. Then it orders more orange juice from the supermarket. You can also use the computer screen to order other things from the supermarket. The computer screen has a series of things that are in the store. You can choose what you need. The supermarket will send the food to your home.

Companies are making other kinds of “smart” appliances (电器), too. There is a new kind of microwave oven (微波炉) which has a computer memory. It can remember 365 different cookbooks. There is also a smart mixer that can remember cookbooks. Even it can test ingredients for you!

Of course, sometimes these smart appliances don’t work. When they do, they will tell you. And then they can call someone to fix them, too!

1.Your fridges can do the following things except　　　　　　　　　　 .

A.keep food warm B.make ice

C.keep food cold D.freeze food

2.What’s the meaning of the underlined word “linked” in paragraph 2?

A.prepared B.connected

C.offered D.formed

3.Which is not true?

A.The oven can call someone to fix itself when it doesn’t work.

B.The oven can store 365 cookbooks.

C.The mixer can test ingredients for you.

D.The mixer can help you clean the kitchen.

4.What is the main idea of the text?

A.Online fridges have a computer screen on the door.

B.Fridges of the future will order food from the supermarket.

C.Smart appliances, like online fridges, can be very helpful.

D.People won’t have to go to supermarkets to buy food in the future.

高一英语阅读理解中等难度题查看答案及解析

You cannot see any object unless light from that object gets into your eyes. Some of the things you see give off light of their own. The sun, the stars, a lighted lamp are examples that can be ssen by their own light. Such things are luminous. Most of the things you see are not giving off light of their own. They are simply reflecting light that falls on them from the sun or some other luminous bodies. Then moon , for example , does not give off any light of its own. It is non-luminous. You see it because sunlight falls on it and some of it reflects in your direction. So moonlight is only secondhand sunlight.

When you look at a book, it sends your eyes some of the light that falls on it, and you see the book. If light could be kept out from where you are so that there would be no light for the book to reflect, then you could not see the book even with your eyes wide open.

Light travels so fast that the time in which it travels from the book you are reading to your eyes is so short as if it took no time at all. Light reaches us form the moon , which is about 380,000 kilometers away, in only a little more than a second.

1.You can see the book because___________.

2.The word “ reflects”  means____________.

3.    ___________ have light of their won.

高一英语阅读理解简单题查看答案及解析

You can not see any object unless light from that object gets into your eyes. Some of the things you see give off light of their own. The sun, the stars, a lighted lamp are examples that can be seen by their own light. Such things are luminous. Most of the things you see are not giving off light of their own. They are simply reflecting light that falls on them from the sun or some other luminous bodies. The moon, for example, does not give off any light of its own. It is non-luminous. You see it because sunlight falls on it and some of it reflects in our direction. So moon light is only second hand sunlight.

When you look at a book, it sends to your eyes some of the light which falls on it, and you see the book. If light could be kept out from where you are so that there would be no light for the book to reflect, then you could not see the book even with your eyes wide open.

Light travels so fast that the time in which it travels from the book you are reading to your eyes is so short as if there were no time at all. Light reaches us from the moon, which is about 380 000 kilometers away, in only a little more than a second.

1.You can see the book because_______.

2.The underlined word “luminous” means_______.

3.________ have light of their own.

4.Which of the following is true?

高一英语阅读理解中等难度题查看答案及解析

You may be an inexperienced candidate, but none of that makes things worse than your walking into that interview room ______in confidence.

A.lacked B.lacking C.for lack of D.lacking of

高一英语单项填空中等难度题查看答案及解析

My best friend and I walked to an ice cream shop today. I brought my water bottle out of habit and commented to her that I had no idea why I brought it. We kept 1.(go) though. On our way, a man asked 2.either of us had money for water, or a drink or something. He was sitting on the ground at the time with a sign he stopped holding up.

I offered my reusable water bottle for him 3.(keep). He drank all the water quite 4. (quick). He gave me my bottle back after all. I said to my friend with a smile, “That was 5.I brought it then.”

On the return back from the ice cream store, I tried to get water to go, in case he 6. (may) be still there. They only had mineral water and coconut water there, something he probably disliked. It turned out he was no longer there, though.

My friend and I talked about keeping water 7. (bottle) on hand in our vehicles and socks with added positive statement notes. This way, we give away 8. (use) things 9.are truly helpful. We both like the idea and these things will 10. (prepare) soon.

高一英语语法填空中等难度题查看答案及解析

______ a piece of ice outside in such hot weather, and you’ll soon find it melt.

A. To put         B. Put         C. Putting         D. Having put

高一英语单项填空困难题查看答案及解析