_______ successful docking of Shenzhou VIII with Tiangong-I means that China has managed to take ________ first important step to establish its own space station.
A./; /
B.A; a
C.The, a
D.The; the
网友回答
D解析考查冠词。第一空表示特指神州八号与天宫一号的对接，故用定冠词the.第二空序数词前用定冠词the，指走出了重要的第一步.故D正确。