1、______(单选题)
A. got
B. alternated
C. altered
D. taken
试题答案:C
2、______(单选题)
A. chose
B. adopted
C. accepted
D. took。
试题答案:B
3、For years an acrimonious debate over how to protect heroin users impeded efforts in the U.S. to control the spread of AIDS.(单选题)
A. convoluted
B. belied
C. stoked
D. encumbered
试题答案:D
4、______(单选题)
A. from
B. to
C. of
D. on
试题答案:D
5、No sooner had he seen the horrible sight while he stood motionlessly.(单选题)
A. than
B. before
C. when
D. as
试题答案:A
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