A) to be shown
B) to have shown
C) to have been shown
D) being shown
第1题
A) stability
B) capability
C) persistence
D) permanence
第2题
A) vigorous
B) exact
C) acute
D) vivid
第3题
A) told
B) would tell
C) had told
D) would have told
第4题
A) explore
B) expose
C) exploit
D) expand
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