YangLiwei，China’sfirstspaceman，preparedcarefullyforgoingtospacesothathe

发布时间：2020-08-14 06:22:13

Yang Liwei，China’s first spaceman，prepared carefully for going to space so that he could be sure of success at his first _________A.experimentB.flightC.attemptD.try

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C解析at the first attempt意为“第一次尝试”。
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