70. Some women _D_ a good salary in a job instead of staying home, but they decided not to work for the sake of the family.
A must make B should have made C would make D could have made
for the sake of为了… ;为了…的利益;
与过去事实相反时用：情态动词 + have + 动词过去分词;
should have + 动词过去分词，表示本应该…
-------------------------1997-06-------------------------
32. You cannot be _B_ careful when you drive a car.
A very B too C so D enough
cannot too 在…也不为过，越…越好。
34. Every man in this country has the right to live where he wants to _A_ the color of his skin. [regardless of 不管，不顾]
A regardless of B in the light of C by virtue of D with the exception of
35. Housewives who do not go out to work feel they are not working to their full _B_.
A strength B capacity C length D possibility
strength n. 力量，体力，实力; capacity n. 才能，才智(能力方面)。
38. The old couple decided to _C_ a boy and a girl though they had three of their own.
A adapt B bring C adopt D receive
39. The government is trying to do something to _D_ better understanding between the two countries.
A raise B increase C heighten D promote
promote better understanding 增进理解。
40. The newspaper did not mention the _A_ of the damage caused by the fire.
A extent B level C range D quantity
extent作核心名词，表示到…程度了，介词用to。
41. The soldier was _A_ of running away when the enemy attacked.
A accused B charged C scolded D punished
be accused of 被指控，被职责; be charged with 被指控。
42. Had he worked harder, he _D_ the exams.
A must have got through B could get through
C would get through D would have got through
had he worked harder (虚拟语气) = if he had worked harder …
与过去事实相反用：情态动词 + have + 动词的过去分词。
45. It seems oil _B_ from this pipe for some time. We'll have to take the machine apart to put it right.
A had leaked B has been leaking C leaked D is leaking
for + 一段时间，做时间状语，谓语动词用完成时态。过去完成时要与一般过去时搭配。
46. When he arrived, he found _C_ the aged and the sick at home.
A nothing but B none other C none but D no other than
形容词前加the表示一类人。 none but 只有，仅有。
47. The pressure _B_ causes Americans to be energetic, but it also puts them under a constant emotional strain.
A competing B to compete C to be competed D having competed
the right to vote 选举权。 动词不定式作后置定语要用主动形式。
the pressure to compete 竞争的压力。
49. As teachers we should concern ourselves with what is said, not what we think _C_.
A have to be said B must say C ought to be said D need to say
50. Once environmental damage _A_, it takes many years for the system to recover.
A is done B is to do C does D has done
相关链接：新东方：四十天突破英语四级词汇笔记(第3课)
新东方：大学英语四六级单词记忆方法大全
背诵英语四六级大纲单词应注意的三大原则
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