【題目】Now more and more man-made satellites are _____ by humans.

A. sent forB. send upC. sent upD. sent into

【答案】C

【解析】

句意：現(xiàn)在越來越多的人造衛(wèi)星由人類發(fā)射。A. sent for派人去叫；B. send up發(fā)出，射出，使上升；C. sent up發(fā)出，射出，使上升；D. sent into把……送入。我們知道man-made satellites與send之間有被動關(guān)系，因此應該用被動句；結(jié)合語境可知，本題應該用一般現(xiàn)在時，所以本題是一般現(xiàn)在時的被動句，其結(jié)構(gòu)是：is/are+動詞的過去分詞。send的過去分詞為sent。故選C。

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