The world’s population was about 6.5 billion in 2008. ___46___ three billion people ___47___ Asia now. That’s about half of the world’s population.

China has the ___48___ population in the world, and about one fifth of the people in the world live in China. ___49___ the large population, there is ___50___ living space for each family. And it’s difficult for lots of people to find jobs. A large population also causes many ___51___ for ___52___ nation. For example, we are short ___53___ energy and water. Most cities are more ___54___ than before, and the traffic is much ___55___. The large population ___56___ a serious problem.

So far, our government has taken many measures to control the population. One is know ___57___ the one-child policy. It has worked ___58___ in controlling China’s population. Thanks to the policy, China is developing ___59___ and people’s living conditions are improving rapidly. However, the population problem is ___60___ serious in China. We still have a long way to go.

1.A. About         B. More       C. Over       D. Less

2.A. lived in        B. live in      C. lives in     D. live

3.A. largest         B. biggest     C. biggest      D. most

4.A. As            B. Because    C. For         D. Because of

5.A. more          B. less        C. little       D. fewer

6.A. difficulty       B. difficult    C. difficulty    D. difference

7.A. the all         B. all         C. the whole    D. whole

8.A. for            B. of         C. in          D. to

9.A. crowd         B. crowds     C. crowding    D. crowded

10.A. busy         B. heavy       C. heavily      D. heavier

11.A. become       B. becomes    C. became     D. has became

12.A. for          B. at          C. as          D. in

13.A. well         B. good        C. hard        D. hardly

14.A. quick        B. quickly      C. rapid       D. fast

15.A. ever         B. never        C. ready      D. still

A passenger (乘客) told an air hostess (空姐) that he needed a cup of water to take medicine when the plane just took off. She told him that she would bring him the  46   soon.
Twenty minutes  47  , when the passenger’s ring for service sounded, the air hostess realized it at once. She was kept so busy that she  48   to bring him the water. Therefore, the passenger was held up (延迟) to take his medicine. She hurried over to him with a cup of water, but he   49  it.
In the following hours on the flight,   50  time the air hostess passed the passenger, she would ask him with a smile   51   he needed help or not. But the passenger never   52   her words.
When he was going to get off the  53  , the passenger asked the air hostess to hand him the passengers’ booklet (意见簿). She was very  54 . She knew that he would write down sharp words, which might make her  55   the job.  56  with a smile she handed it to him.
Off the plane, she  57  the booklet, and cracked a smile, for the passenger put it, “On the flight, you asked me if I needed help for twelve times  58 . How can I refuse  59  twelve sincere smiles?”
That’s right! It was the twelve smiles of the air hostess that touched (感动) the passenger
  60   and of course she wouldn’t lose her job!

Different from popular thoughts, sometimes flu（流感） is not caused by bad weather. It is caused by viruses in the body.  51  ,  A/H1N1 flu has been spreading in the most parts in the world. Some studies have now shown that one of  52  ways of spreading the viruses is through the air when  53  A/H1N1 flu-sufferer coughs or sneezes. However, its viruses can sometimes spread by  54 . After a flu-sufferer rubs his nose, the viruses might be spread to his hand. Then a friend 55 to visit him, they shake their hands. The friend then gets something  56  by hand, and several days  57, he is infected. A child  58  is carrying A/H1N1 viruses uses tissues（面纸） to clean his running nose, although his parents pick up the tissues and carefully throw  59  away, they fail to wash their hands, and they will catch the viruses, too. So it is important for you to wash your hands often, it will stop the viruses from  60  in a way.