在影像学表现上,本病主要与下面哪种疾病鉴别 A. 先天性脑积水 B. 脑裂畸形 C. 脑灰质异位 D. 颅后窝巨大蛛网膜囊肿 E. 胼胝体发育不全 参考答案:D
第3题: [单项选择]Only since they gave up that good chance ______ to show their invention again. A. have they had no chance B. they have had no chance C. they have no chance D. have they no chance 参考答案:A 答案解析:句子中only修饰since引导的时间状语从句置于句首,主句用部分倒装形式。