【題目】— Do you know about China’s Bei Dou Navigation Satellites system (北斗衛(wèi)星導(dǎo)航系統(tǒng))?

— Yes. So far, China ________ up 43 Bei Dou Satellites (衛(wèi)星) successfully.

A.sentB.is sendingC.has sent

【答案】C

【解析】

句意：——你知道中國的北斗衛(wèi)星導(dǎo)航系統(tǒng)嗎？——知道。迄今為止，中國已成功發(fā)射了43顆北斗衛(wèi)星。

考查動詞時(shí)態(tài)。sent一般過去時(shí)；is sending現(xiàn)在進(jìn)行時(shí)；has sent現(xiàn)在完成時(shí)。根據(jù)關(guān)鍵詞So far可知，本句為現(xiàn)在完成時(shí)。故選C。

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