It is very important for people to drink water in our everyday life. Many people believe they are supposed to drink eight glasses of water a day, or about two liters. Why? Because that is what they have been told all their life. But a recent report offers some different advice. Experts say people should obey their bodies; they should drink as much water as they feel like drinking. The report says most healthy people meet their daily needs for liquid by letting thirst be their guide. The report is from the Institute of Medicine, part of the National Academies. The report contains some general suggestions. The experts say women should get about 2.7 liters of water daily. Men should get about 3.7 liters. But wait——in each case, that is more than eight glasses.

There is one important difference. The report does not tell people how many glasses of water to drink. In fact, the experts say it may be impossible to know how many glasses are needed to meet these guidelines. This is because the daily water requirement can include the water content in foods. People do not get water only by forcing themselves to drink a set number of glasses per day. People also drink fruit juices and sodas and milk. They drink coffee and tea. These all contain water. Yet some also contain caffeine. This causes the body to expel(排出)more water. But the writers of the report say this does not mean the body loses too much water.

As you might expect, the Institute of Medicine says people need to drink more water when they are physically active. The same is true of those who live in hot climates. Depending on heat and activity, people could need two times as much water as others do. All this, however, does not answer one question. No one seems sure why people have the idea that good health requires eight glasses of water daily.

It may have started with a misunderstanding. In 1945, the National Academy of Sciences published some guidelines. Its Food and Nutrition Board(营养膳食) said a good amount of water for most adults was 2.5 liters daily. This was based on an average of one milliliter(毫升)for each calorie of food eaten. But that was only part of what the board said. It also said that most of this amount is contained in prepared foods.

1.In experts’ opinion, every day a person should drink ____.

   A. as much water as he can                 B. more than eight glasses of water

   C. according to actual need for his body           D. when he comes in sight of water

2.What is mainly described in the second paragraph?  

   A. People know about the daily water requirement. 

B. People need water instead of all kinds of drink.

   C. People get daily water not only from drinking. 

D. People drink all kinds of drink every day.

3.Who might drink less water according to the third paragraph?

4.The main purpose of writing the texts is to _______.

   A. make a good suggestion of drinking daily  B. make clear the requirements to drink daily

   C. tell the importance of drinking water daily     D. figure out a good amount of water daily

     阅读下面短文，掌握其大意，然后从各题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。

   I believe in miracles(奇迹)because I've seen so many of them．One day，a patient was referred to me who was one hundred and two years old．“There’s a  1in my upper jaw，”she said．“I told my own dentist it's nothing，but he   2I come to see you”

Her eighty-year-old son accompanied her．He would  3to add something，but she stopped him．She wanted to tell everything herself．I found a large cancer that spread over much of the

4of her mouth．A careful examination later   5that it was a particularly bad sort of cancer．

    During her next appointment，I explained to her the   6of the problem She clasped my

hand in hers and said，“I know you’re worried about me，but I’m just  7．”

    I thought otherwise．After considerable  8on my part，and kindness on her part because she wanted to  9_ me，she agreed to have me refer her to a cancer surgeon．She saw him，but as I expected， 10treatment．

  About six months later she returned to my office，still energetic and  11．

  “How are you?”I asked．

  “I’m just fine，honey，”she responded  12high spirits．“When can I get stared on fixing

my dentures(假牙)?”

    Surprised to see her at all，I answered   13，“Let me take a look in your mouth and we’ll

see about it. ”

    I couldn’t believe my eyes．The cancer that had  14nearly the entire roof of her mouth was gone—only one small area of redness  15．

    I had read of such things happening，but had  16seen them with my own eyes．That was my first miracle．Since then I've seen many others，because they keep getting  17to see．In fact，miracles are daily events for me now．And people are a miracle，  18through them we have a chance to know ourselves and to  19the miracles of one another．

    Since my first miracle，I've come to understand that the time and place for a miracle is __20we choose to find it．

1.A．cut                    B．pain             C．wound        D．cancer

2.A．declared               B．suspected            C．promised         D．insisted

3.A．refuse             B．continue         C．attempt      D．manage

4.A．roof                   B．corner           C．bottom       D．surface

5.A．confirmed              B．convinced            C．considered   D．concluded

6.A．possibility                B．importance       C．seriousness D．resolution

7.A．old                    B．sick             C．fine             D．glad

8.A．permission         B．support          C．approval         D．effort

9.A．persuade               B．please           C．encourage    D．astonish

10.A．declined              B．provided         C．received         D．required

11.A．healthy               B．elegant          C．optimistic   D．humorous

12.A．to                    B．in               C．with             D．by

13.A．worriedly             B．confusedly       C．patiently        D．confidently

14.A．covered               B．reached          C．filled       D．grown

15.A．cured                 B．faded                C．expanded         D．remained

16.A．ever                  B．also             C．never        D．already

17.A．easier                B．rarer                C．happier      D．closer

18.A．or                    B．so               C．yet          D．for

19.A．read                  B．make             C．keep         D．see

20.A．whatever              B．wherever         C．whoever      D．whichever

 —Since you can't find a better way out for the time being，why not follow his advice?

—Oh，         ．

A．I believe not    B．I might as well    C．It doesn't matter   D．I don't care

 It’s a pity that you         leave so soon. It’s been so nice having you here.

   A. should                 B. could              C. can              D. might

 —It’s reported that the new underground line has been completed．

    —Yes but it hasn’t been made clear              it’s to be opened to traffic．

    A．that                 B．who              C．what            D．when

 all kinds of difficulties，the workers have made rapid progress in the construction of

    the World Expo 2010 Shanghai．

    A．With             B．For              C．Under            D．Beyond

 Too high house prices can be brought under control，     ___the authorities introduce a series

    of regulatory policies．

    A．even if          B．as if                C．so that          D．provided that

 Low-carbon lifestyle is of great benefit to improve the world environment．         can be

    enjoyed from it until you have a deep understanding of it，however．

    A．Something        B．Nothing          C．Few              D．Much

 — You may find the key to the maths problem on page 107.

— Ah, it’s so simple. I wonder why I ______ of that.   

A. hadn’t thought                  B. haven’t thought        

C. didn’t think                    D. wasn’t thinking

 For professional athletes, ________ to the Olympics means that they have a chance to enter the history books.

A. access           B. attachment       C. appeal           D. approach