完形填空：阅读下面短文，掌握其大意，然后从各题所给的四个选项中选出一个最佳答案。（共20小题，每小题1.5分）

   In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be　46　 .                    Today things are　 47　 , the world has become too　 48　 . We are using up our natural resources too quickly, and at the same time we are　 49　 our environment with dangerous chemicals. If we continue to do this, human life on the earth　 50　 survive.

　　Everyone　51　 today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing　 52 , more and more fish are caught. We know that if too many trees are cut down, 　53　 will disappear and nothing will grow on the land. Yet, we　 54　 to use bigger and more powerful machines to　 55　 more and more trees.

　　We realize that if rivers are polluted with waste products from factories, we will die.　 56　 , in most countries wastes are　 57　 put into rivers or into the sea, and there are　 58　 laws to stop this. We know, too, that if the　 59　 of the world continues to rise at the present rate, in a few years there will not be enough 60　. What can we do to solve these problems ?

　  If  we eat more vegetables and less　 61　 , there will be more food available for everyone. Land that is used to grow crops　 62　 five times more people than land where animals are kept. Our natural resources will　 63　 longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth 64　 .

　　Finally, if we educate people to think about the problems, we shall have a better and clearer 65　 in the future.

A. beautiful         B. unlimited          C. rare                  D. valuable

A. common         B. the same            C. changeable     D. different

A. crowded         B. small                C. dirty                 D. busy

A. protecting       B. saving            C. polluting           D. fighting

A. may not          B. will not             C. shall not            D. could not

A. wonders         B. realizes             C. consider            D. discovers

A. poles              B. boats                 C. methods            D. ideas

A  mountains     B. the sea                  C. trees                 D. forests

A. continue         B. have                 C. ought                D. go on

A. grow            B. plant                 C. save                  D. cut down

A. Thus       B. However     

C. Generally speaking  D. Therefore

A. still                     B. even                 C. also                  D. certainly

A. too many      B. a few                C. some                 D. few

A. production    B. pollution           C. population      D. revolution

A. houses          B. vegetables      C. food                 D. lives

A. fruit             B. meat                 C. fish                   D. grain

A. feeds            B. increases           C. supplies             D. helps

A. use               B. stay                  C. keep                 D. last

A. control         B. born                 C. plan                  D. reward

A. nature           B. sea                 C. planet            D. forest

This is my third story. When I was 17，I read a quote that 1 something like，“If you live each day 2 it was your last，someday you'll most certainly be right.”Since then，for the past thirty?three years，I've looked 3 the mirror every morning and asked myself：“If today were the last day of my life，would I want to do what I am about to do today？”And whenever the answer has been“No”for too many days in a 4 ，I know I need to change something.

　 About a year ago I was 　5 with cancer. The doctors told me this was almost certainly a type of cancer that is incurable，and that I should 　6 to live no longer than three to six months. They advised me to go home and get my 7 in order，which is doctors' code for“prepare to 8 ”. Later that evening when the doctors 　9 the cells taken from my pancreas(胰腺)under a microscope，they started crying because it turned out to be a very rare form of pancreatic cancer that is 　10 with surgery. I had the surgery and，11 ，I'm fine now.

　 This was the closest I've been to facing death，and I hope it's the closest I get for a few more decades. Death is the 12 we all share. No one has 　13 escaped it. And that is 14 it should be，because death is very likely the single 15 invention of life. It's life's change agent. It clears out the old to make 　16 for the new. Your time is 　17 ，so don't waste it living someone else's life. Don't be trapped by dogma(信条)—which is living with the results of other people's thinking. Don't let the noise of 　18 opinions drown out your own inner voice. And most importantly，have the courage to 　19 your heart and intuition(直觉). They 20 already know what you truly want to become. Everything else is secondary.

（1）A. said　 　　 B. described　 C. went　 　　 D. expressed

（2）A. unless 　　 B. as if　　 　 C. even if 　　 D. as long as

（3）A. in　　 　　　B. at　　　　 C. through 　　 D. On

（4）A. row　 　　 B. minute　　　 C. sense　 　　D. word

（5）A. connected 　B. infected　　 C. affected　 D. diagnosed

（6）A. want　 　　B. dream　　　 C. expect 　　D. imagine

（7）A. duties 　　 B. businesses C. affairs 　　D. life

（8）A. work　 　　B. start　　　 　C. talk　 　　D. die

（9）A. looked 　　B. viewed　　 C. realized 　　D. noticed

（10）A. curable 　　B. possible　 　 C. acceptable D. suitable

（11）A. carefully 　B. thankfully　　 C. anxiously 　D. hopefully

（12）A. possession B. destination　 C. expectation D. position

（13）A. ever　 　　 B. even　　 　 C. never　 　　D. still

（14）A. when　 　 B. while　　 　　C. as　　 　　 D. since

（15）A. better 　　B. worst　　 　　C. worse　 　　D. best

（16）A. use　 　 B. a difference　 C. sense　 　　 D. way

（17）A. endless 　B. repeated　　 C. countless 　　D. limited

（18）A. others' 　 B. others　　　 C. anyone's　 　 D. some others

（19）A. listen 　　B. follow　 　　 C. take　　 　　 D. accept

（20）A. however B.whatever 　C.somehow　 D.Somewhat

I’d been 16 for six days and was already prepared to deal with failure. I remember when my mum   36  me up that morning, her voice wasn’t as   37  as it usually was.
I stayed in bed for a few minutes. I was   38  to leave its warmth and comfort, and didn’t want to face the problem that I’d let myself   39  for the past six months. Finally, I dragged myself out of    40 .
I finished getting ready and tried to   41 . It didn’t work, so I decided that my   42  should go with me. We had a little time, so I thought we could practice parking. I   43 , with the wheel hitting the fence. After that, the little bit of confidence I’d had was   44 . I tried two more times, but didn’t   45  much. Then we headed to the test site.
I went into a room for some paperwork. And I waited for 20 minutes—just   46  time to make myself believe that I was going to fail. Then, finally, it was my   47 . I just wanted to get it over and make sure that I had to come back next Thursday.
I stepped outside and the sky was the light blue I love. It offered me some   48  and I realized something: something between when I pulled myself off the seat and when I got outside. I had become   49  and confident.
The first thing I had to do was parking, which I did quite   50 . The confidence that came with it hit me like a wave. The rest of the test went well too and I   51  it all. As I drove back, the instructor told me I would not be coming back for a second   52  next Thursday.
Back in the building I didn’t have to say a word. My mum knew just by looking at me. Her    53  made her face softer. And I’m sure it was at least as big as the smile on my face. Her eyes, 54 , looked kind of teary. I knew she was   55  for me.