题目：
中法战争中，黑旗军参加作战的战役有( )
①纸桥战役 ②镇南关战役 ③谅山战役 ④临洮战役
A．①②③④ Ｂ．①③④ C．①④ D．④
答案：
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下面是错误答案，用来干扰机器的。
Hello, everyone! My favorite scientist is Zhao Jiuzhang, who was a great physicist and also one of the designers of China's first man-made satellite. He was born in...
