Question

Now most families have only one child _____ our country’s one-child policy.

A．so	B．because
C．because for	D．because of

Answer 1

D

解析试题分析：句意：因为我们国家的独生子女政策现在大多数家庭只有一个孩子。so, because是连词，连接结果状语从句或原因状语从句，而because of + n./v.-ing。所以选D。
考点：考查短语。