a fine day, Shenzhou VI will be launched on time according to its planned time.A
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___________ a fine day, Shenzhou VI will be launched on time according to its planned time.
A.Being
B.It being
C.To be
D.It is
试题答案
B
本题考查独立主格结构。前一分句和后一分句在逻辑上存在因果关系，可以排除答案D。因为前面的分词的逻辑主语不可能是后面一个分句的逻辑主语，故前一分句要有一个逻辑主语it表示天气。