The book was written in 1946, __________ the education system has witnessed gre
题型:不详难度:来源:
The book was written in 1946, __________ the education system has witnessed great charges. A.when | B.during which | C.since then | D.since when |
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答案
D。 |
解析
since when中的when指1946,since when指的是since 1946,即指“自1946年起”。注意不要误选C,如果将C改为and since then,则可选C。 |
举一反三
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