He will keep ________ new ideas so he can help farmers around China.A．trying onB_刷题宝

题干

He will keep ________ new ideas so he can help farmers around
China.

A．trying on

B．trying out

C．trying

D．both B and C

上一题下一题 0.85难度单项选择更新时间:2010-12-29 03:59:04

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