以下（）情况可能无法完成DSC定相A、正确接收到相邻接的2个DX和1个RX B、正确

“秦王扫六合，虎视何雄哉！”秦王完成统一于公元前221年，是 [ ]

A．公元前2世纪

B．公元前3世纪

C．公元2世纪

D．公元3世纪

X.75建议包括的层次为（）。

A、一层

B、二层

C、三层

D、四层

The husband rushed to the hospital ____ he heard that his wife was injured.

A．at the moment

B．for the moment

C．directly

D．in a moment

第二节：完形填空（共20小题；每小题1.5分，满分30分）

What is in the drug that makes you sick or dead? For example, cocaine is harmful, but what makes it harmful?

I can’t tell you all about drugs, but I can ___36___ you think about them in this ____37____ way. Your body is a very complicated machine, ____38____ a lot of chemical machinery, all of which is finally turned ____39____ it all works together. Special chemicals, which we call drugs, can affect it in many different ways.

Some drugs are ____40____ when your body has a problem, as with disease—causing bacteria. Then someone may give you aspirin to keep your temperature from going too ____41____ or some penicillin (青霉素) ____42____ it stops the growth of some kinds of bacteria. ___43_____, all drugs are really poison, ____44_____ if you take too much, so you must always use them ____45____.

Why do some people take drugs like cocaine? For a little while they seem to make you feel better, or happier. But ____46____ their effects have ____47____, your body has to pay an extra ____48____ to get back to normal. That makes you want to get ____49____ of the drug.

Drugs like cocaine have their special effects because they act as ____50____ for your nervous system. They cut off some of your nerve pathways and take away some of your senses and your ____51___. They make you want always more. And just a little too much can even ____52____ nerves to your heart and stop its beating

Many of us worry about the ____53____ around us and what pollution does to us. How about your internal environment and what goes on ____54____ you? You control that all by yourself in what you put into your ____55_____. Most drugs are pollutants. You would not want pollutants in the air and water around you. Why would you want pollutants in your body?

36.  A.   make              B.   cause                    C.  help                 D.   let

37.  A.   funny             B.   different               C.  simple              D.   true

38.  A.   just                B.   really                   C.  especially         D.   sometimes

39.  A.   as if              B    even if                 C.  where              D.   so that

40.  A.   powerful        B.   helpful                 C.  painful             D.   helpless

41.  A.   high               B.   tall                       C.  much               D.   hot

42.  A.   when              B.   until                     C.  as                    D.   before

43.  A.   besides           B.   thus                     C.  however           D.   naturally

44.  A.   at most           B.   at least                 C.  at times            D.   at first

45.  A.   carefully         B.   easily                   C.  carelessly         D.   a lot

46.  A.   where             B.   before                  C.  after                D.   until

47.  A.   worked           B.   worn                    C.  appeared          D.   lost

48.  A.   number          B.   quantity                C.  amount            D.   price

49.  A.   Some more     B.   nothing                C.  a little              D.   a few

50.  A.   guards            B.   medicine              C.  chemicals         D.   poisons

51.  A.   worries           B.   happiness              C.  freedom           D.   pride

52.  A.   lead               B.   block                   C.  offer                D.   stick

53.  A.   places             B.   nature                  C.  people              D.   environment

54.  A.   inside             B.   around                 C.  outside             D.   next

55.  A.   heart              B.   head                     C.  body                D.   mind

水吸到气管、肺里面去方令人发呛，如果只在人的鼻子里装点水而没让他吸进去，他也不会发呛。大象就是一个例证。如果你细心一点观察，会发现大象在饮水时是先用鼻子吸一点水(并没有吸到肺里去)，然后抬起头来，把鼻子里的水放到嘴巴里去喝。在此过程中，它只是把鼻子作为吸水的工具，而并没有把鼻子当成饮水的器官。 这段话要论证这样一种观点( )。

A．你必须细心一点观察

B．大象的鼻子是取水的工具

C．大象喜欢用鼻子吸一点水放到嘴里去喝

D．水吸到气管、肺里面去才会发呛