The world's (remained) tropical forests (are being destroyed) so fast that, (at) current trends, by the middle of this century only (the most inaccessible) will remain.
A.remained
B.are being destroyed
C.at
D.the most inaccessible
第2题
A.①②
B. ①②③④
C. ①②③
D. ③④⑤
E. ①②③④⑤
第3题
A.第二类、第三类医疗器械
B.第一类医疗器械
C.第二类医疗器械
D.第一类、第二类医疗器械
E.第三类医疗器械
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