The U.S. achieved its predominance after World War Ⅱ because ______.
A. it had made painstaking effort towards this goal
B. its domestic market was eight times larger than before
C. the war had destroyed the economies of most potential competitors
D. the unparalleled size of its workforce had given an impetus to its economy
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As I'll be away for at least a year, I'd appreciate ______ from you now and then telling me how everyone is getting along.
A. hearing
B. to hear
C. to be hearing
D. having heard
Which of the following statements is NOT true
A. Cloning may lead to the loss of identity.
B. The cloned human children may have some psychological problems.
C. The psychological effects of cloning may be overlooked.
D. Genetic Uniqueness is important.
His efforts to bring about a reconciliation between the two parties ______.
A. came off
B. came on
C. came round
D. came down
The roles expected ______ old people in such a setting give too few psychological satisfactions for normal happiness.
A. of
B. on
C. to
D. with
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