【題目】China ___________ (send) the 54th Beidou navigation satellite (導(dǎo)航衛(wèi)星) into space. It shows our fast development in exploring outer space.

【答案】has sent

【解析】

句意：中國已將第54顆北斗導(dǎo)航衛(wèi)星送入太空。它顯示了我們在探索外層空間方面的快速發(fā)展。

從文字的表層意思推斷空格指中國已將第54顆北斗導(dǎo)航衛(wèi)星送入太空，表示已經(jīng)完成的動作，用現(xiàn)在完成時，其謂語動詞為has/have+過去分詞；主語China，助動詞用has，send的過去分詞為不規(guī)則變化sent；故答案為has sent。

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