第二章测试1.Which is the signal word to introduce cause ( ).
A:so
B:Therefore
C:Thus
D:because
答案:D
2.Which is the signal word to introduce effect ( ).
A:Thus
B:so
C:Therefore
D:because
3.Which is not the signal word to introduce effect ( ).
A:Thus
B:because
C:Therefore
D:so
4.Which is not the signal word to introduce cause ( ).
A:because
B:so
C:Thus
D:Therefore
5.Because is the signal word to introduce cause. ( ).
A:错 B:对
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