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
形容詞前加the表示一類人。 none but 只有，僅有。
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 選舉權(quán)。 動(dòng)詞不定式作后置定語要用主動(dòng)形式。
the pressure to compete 競爭的壓力。
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
51. Studies show that the things that contribute most to a sense of happiness cannot be bought， _B_ a good family life， friendship and work satisfaction.
A as for B such as C in case of D in view of
contribute to 對…做出貢獻(xiàn)。
52. He will agree to do what you require _D_ him.
A for B from C to D of
require sth. of sb. 要求某人做某事。
53. The mere fact _A_ most people believe nuclear war would be madness does not mean that it will not occur.
A that B which C what D why
fact后面要加同位語從句。
54. John seems nice person. _C_， I don’t trust him.
A Even though B Therefore C Even so D Though
even so 即便如此，盡管如此。
55. I don’t think it advisable that Tom _A_ to the job since he has no experience.
A be assigned B will be assigned C is assigned D has been assigned
advisable后面加句子要用虛擬語氣，形式為：(should)+ 動(dòng)詞原形。
56. _D_， a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of language is poor.
A Other things to be equal B Were other things equal
C To be equal to other things D Other things being equal
B項(xiàng)如果不省略if應(yīng)為：If other things were equal
如果從句用虛擬語氣，主句也必須用虛擬語氣形式。
other things being equal 在這里是獨(dú)立主格做條件狀語。
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