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题目内容
（河南科技大学大学英语3(专升本)）
Locusts are not easily wiped out by their enemies because ______.
A:they are powerful enough
B:they are dangerous to their enemies
C:they take on the same colors as crops
D:they fly extraordinary fast
A:they are powerful enough
B:they are dangerous to their enemies
C:they take on the same colors as crops
D:they fly extraordinary fast
参考答案