Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger, but we also affect our water supply in less obvious ways. You may wonder how paving(鋪砌) a road can lead to less useable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave, the less water can flow into the ground to become groundwater.

Human activity is not responsible for all water shortages(缺乏). Drier climates are of course more likely to have droughts(干旱) than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs .

Thinking about the way we use water every day can make a big difference, too. In the United States, a family of four can use 1.5 tons of water a day! This shows how much we depend on water to live, but there’s a lot we can do to lower the number.

You can take steps to save water in your home. To start with, use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher only when it is full. Help your parents fix any leaks(滴水) in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away.

1.Which of the following is most likely to lead to less groundwater?

A. Using river water. B. Throwing batteries away.

C. Paving parking lots. D. Throwing rubbish into lakes.

2.What can be inferred from the text?

A. All water shortages are due to human behavior.

B. It takes a lot of effort to meet our water needs.

C. There is much we can do to reduce family size.

D. The average family in America makes proper use of water.

3.The last paragraph is intended to ________________.

A. show us how to fix leaks at home

B. tell us how to run a dishwasher

C. prove what drinking glass is best for us

D. suggest what we do to save water at home

4.The text is mainly about _________________.

A. how human activity affects our water supply

B. how much we depend on water to live

C. why droughts occur more in dry climates

D. why paving roads reduces our water

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An 80-year-old man was sitting on the sofa in his house along with his 45-year-old highly educated son.

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After a little while, the old father again asked his son the 3rd time, ''What is this? ''

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This time the son shouted at his father, ''Why do you keep asking me the same question again and again? 'IT IS A CROW'. Are you not able to understand this? ''

A little later the father went to his room and came back with an old diary, which he had kept since his son was born. On opening a page, he asked his son to read that page. When the son read it, the following words were written in the diary:

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A. concerned B. anxious

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A. Because he couldn't understand what his son said.

B. Because he wanted to see how patient his son would be.

C. Because he wanted to make his son angry.

D. Because he was too old to remember anything.

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A. 80 years old. B. 45 years old .

C. 38years old. D. 35 years old.

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Dear Wang Mei,

I’m sorry to hear about your problem. Don’t be too concerning about it. Now I’d like to give you some advice. Firstly, you may have the heart-to-heart talk with your roommates. Perhaps they will realize their mistakes or correct them. Secondly, if you find hard to have a good talk with them, you may write a letter about them. Lastly, if these ways don’t work, you’d better to report it to your teacher, whom will help solve the problem. Good communication is the key to deal with the relationship with others. Maybe someday you should become good friends. I hope my advice will be of greatly help to you.

Best wishes!

Yours,

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A. if exercise cushions against depression

B. what can lead to depression in animals and people

C. if stress can contribute to the development of depression

D. how exercise contributes to reducing someone’s risk for depression

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D. ensure they can lose weight after moderate cycling or jogging

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A. the enzyme called PGC-1alpha helps to ease depression

B. athletes are more likely to develop depression than ordinary people

C. the mice with high levels of PGC-1alpha are easier to develop depression

D. in the past mental health specialists didn’t know exercise could help reduce depression

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From here it could be a short swim to the first jump site. Following an instructor, you swim through rock pools, around rough rocks and right up to the next jump spot. A brief climb and you’ll be standing on the edge wondering, “Why the hell did I agree to this?” Then, and to the yell of your friends, you’re leaping in, with a smile that’s guaranteed to last the rest of the day.

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B. Developing independence.

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D. Enriching lifesaving experience.

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A. You felt scared and regretful.

B. You became totally tired.

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D. You gained complete relief.

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A. To introduce coasteering.

B. To organize coasteering.

C. To advertise spots for coasteering.

D. To train coasteering-lovers.

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