The Space Age __________ in October 1957 when the first artificial s-考呗网题库移动版
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单选题 The Space Age __________ in October 1957 when the first artificial satellite was launched by the Soviet Union．

A．initiated
B．originated
C．embarked
D．commenced

参考答案D
解析: D。自1957年108苏联发射第一颗人造卫星起，太空时代就开始了。
考查动词辨析。空格中要求填入一个不及物动词，故排除及物动词initiate；originate意为“来自”，后面一般跟介词from；embark意为“着手，从事”，与句意不符；commence意为“开始”，用在此处合适。
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