—WhendidtheBritishexplorerJamesCookgettoAntarctic? —No...
练习题1.38W
问题详情:
— When did the British explorer James Cook get to Antarctic?
— Not until the late 18th century ______the Antarctic Circle, but he never saw land.
A. did he cross B. he crossed C. had he crossed D. he had crossed
【回答】
A
知识点:倒装与省略
题型:选择题
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下列化学用语表达正确的是( )A.羟基的电子式 B.乙烯的结构简式是CH2CH2C.醛基的结...
问题详情:下列化学用语表达正确的是()A.羟基的电子式 B.乙烯的结构简式是CH2CH2C.醛基的结构简式是—COH D.淀粉的分子式是(C6H10O5)n【回答】D知识点:糖类油脂蛋白质单元测试题型:选择题...
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我国现存最早的数学名著是A.《九章算术》 B.《缀术》 C.《大明历》 ...
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