题目内容
(请给出正确答案)
[主观题]
He is a leading authority___plant diseases.A、onB、aboutC、forD、of
He is a leading authority___plant diseases.
A、on
B、about
C、for
D、of
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He is a leading authority___plant diseases.
A、on
B、about
C、for
D、of
第1题
He was criticized ________ his mistakes.
A、on
B、with
C、of
D、for
第2题
He swears to his mother that he will never let her ______.
A、on
B、down
C、alone
D、out
第3题
He _________the other students because he studies harder.
A、has an edge on
B、is an edge on
C、will be an edge on
D、sits an edge on
第4题
The politician says he will ________ the welfare of the people.
A) prey on
B) take on
C) get at
D) see to
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