[单项选择]关于脑脊液的描述，错误的是（）。 A. 成人脑脊液含量为125～150ml B. 其中脊髓蛛网膜下隙含有50～65ml C. 脑脊液压力在侧卧时为0.069～0.167kPa（70～170mmH2O） D. 脑脊液压力在平卧时为0.098kPa（<100mmH2O） E. 坐起时腰骶段脑脊液压力为0.196～0.294kPa（200～300mmH2O）
第25题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. The next few days are supposed to be warm. B. The rain is not expected to last much longer. C. It can’t get much better than it already is. D. Clouds and cool temperatures are expected. 参考答案:D 答案解析:[听力原文] M: I’m a little anxious about the weather. It would he nice if these last few days of vaca
第28题: [单项选择]Where could she ______ the key I couldn't find anywhere. A. put B. have put C. has put D. had put 参考答案:B 答案解析:根据后半句“couldn't fmd”可判断，放钥匙的动作发生在“find”之前。“could have done sth．”表示“有可能(会)做某事”，是对过去发生的行为的一种推测。
