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In science fiction we read of flying saucers travel through _____ space, so people want to have ______ better knowledge of the universe.
A. the; a B. /; / C. the; / D. /; a
查看习题详情和答案>>In science fiction we read of flying saucers travel through _____ space, so people want to have ______ better knowledge of the universe.
A. the; a B. /; / C. the; / D. /; a
查看习题详情和答案>>In science fiction we read of flying saucers travel through _____ space, so people want to have ______ better knowledge of the universe.
A. the ; a B. / ; / C. the ; / D. / ; a
查看习题详情和答案>>