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问题: 英语单选

1.This study shows that( )languages may differ, the order in which young kids learn the parts of speech appears to be the same across different languages.
A.since B.so C.while D. but

2.Nobody believed his reason for being absent ffrom the class( ) he had to meet his uncle at the airport.
A.why B.that C.where D. because

解答:

1 C
这里while放在句首,相当于although,解释为虽然,引导让步状语从句.

2 B
这里that是引导同位语从句的连接词,先行词是reason.