全國(guó)公共英語(yǔ)二級(jí)考前沖刺訓(xùn)練(2)

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    During the 19th century scientists found that when a certain part of man were (16), he would lose the (17) to do certain things. And so people thought that each part of the brain does a (18) job. But modern research has found out that this is (19), for it is not easy to say exactly what each part of the head does.
    In the past fifty years there (20) a great increase in the amount of research (21) on the brain. Chemists and biologist have (22) that the way the brain works is not so simple (23) people in general may be. Chemists tell us that about 1000,000 chemical changes (24) in the brain every second. Some recent researches also (25) that man can remember everything (26) happens to him. We may (27) to recall the thing we have heard or seen, but it is all kept there in the storehouse of the human head.
    Earlier scientists said that the power of (28) brain got weaker and weaker as (29) grows older. But it is now (30) that that is not true. (31) the brain is given enough exercise, it keeps its ability. (32) has been proved that an old person who has always been active in the mind has (33) mind than a young person who has only done (34) work (35) using much of his brain.
    16 a. destroyed b. hurt c. broken d. lost
    17 a. strength b. forces c. power d. right
    18 a. busy b. difficult c. same d. different
    19 a. not so b. true c. interesting d. correct
    20 a. has bad b. has been c. was d. had been
    21 a. made b. worked c. doing d. carrying
    22 a. seen b. uncovered c. disclosed d. discovered
    23 a. to b. for c. that d. as
    24 a. get b. go through c. take place d. take part
    25 a. suggest b. know c. advise d. think
    26 a. it b. else c. that d. what
    27 a. be unable b. be able c. be d. not be
    28 a. its b. its c. one d. ones
    29 a. it b. they c. we d. one
    30 a. known b. regarded c. considered d. thought
    31 a. Since b. As long as c. Whether d. As soon as
    32 a. It b. That c. This d. They
    33 a. slower b. quicker c. bigger d. smaller
    34 a. hard b. physical c. chemical d. mental
    35 a. no b. for c. of d. without