4. It is reported that China’s first Mars probe Yinghuo-1 will be launched with the help of Russian launch vehicle in Oct. 2009. (China Daily)
A. 不填;a
B. the; a
C. 不填; the
D. the; the
网友回答
(答案→)A. 不填;a
B. the; a
C. 不填; the
D. the; the
解析：A 可数名词前有物主代词或名词所有格等限制时前不加冠词。第二空表泛指。