It seems that the H7N9 flu ________ more easily among the aged people.A．causesB．_刷题宝

题干

It seems that the H7N9 flu ________ more easily among the aged people.

A．causes

B．discovers

C．finds

D．spreads

上一题下一题 0.65难度单选题更新时间:2018-08-28 09:46:14

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