问题
选择题
34. The designs of the new tools should be ________ carefully, so that we can pick out the one that suits our work.
A．experimented
B．examined
C．exercised
D．tried
答案
答案：B
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34. The designs of the new tools should be ________ carefully, so that we can pick out the one that suits our work.
A．experimented
B．examined
C．exercised
D．tried
答案：B