The new policy allows a couple to have a second birth either is an only child.A. thoughB.

发布时间:2020-08-17 10:47:21

The new policy allows a couple to have a second birth     either is an only child.
A. though
B. if
C. unless
D. until

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A. though
(答案→)B. if
C. unless
D. until
解析:句意:新政策允许一对夫妇生二胎,如果其中有一人是独生子女的话。这里用if引导条件状语从句,A. though虽然,引导让步状语从句, C. unless除非,如果不,引导条件状语从句,until直到,引导时间状语从句,所以选B。
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