第4题: [多项选择]关于急性一氧化碳中毒，下列正确的是 A. 脑水肿 B. COHb增多 C. 血红蛋白氧解离曲线右移 D. 心肌内膜下多发性梗死 参考答案:A,B,D
第5题: [单项选择]How do some countries protect elephants from being hunted A. By persuading ivory hunters. B. By trying to take more care of elephants. C. By establishing elephant preserves. D. By fighting with ivory hunters. 参考答案:C 答案解析:细节题。根据原文第四段“They have established elephant preserves．”(他们建立了大象保护区。)，答案明显是C。
A. you can get a high school diploma without difficulty B. you will be successful in a grade school C. you can be professionally successful without a diploma D. the least you should do is to get a diploma 参考答案:C 答案解析:根据第一段的后两句可以看出，作者指出，除非一个人有像萧伯纳或爱迪生那样的天赋，高中文凭是就业所必需的。反之，如果一个人真正有如这两个伟人的天赋，则可以不受教育而在事业上成功。所以选项C正确。可以首先排
第8题: [单项选择]大量出汗引起抗利尿激素释放增加主要是通过刺激哪种感受器 A. 血管压力感受器 B. 血容量感受器 C. 入球小动脉牵张感受器 D. 渗透压感受器 参考答案:D 答案解析: [考点]ADH分泌的调节；[解析]大量发汗使机体失水，导致血浆晶体渗透压升高，刺激渗透压感受器，反射性引起ADH分泌增多，促进远曲小管和集合管对H2O的重吸收，使尿量减少
A. figure out B. draw out C. look out D. work out 参考答案:A 答案解析:figure out意为“了解，弄清楚”，如：I couldn't figure out who he was．我想不出他是谁。draw out 意为“拉长”，如：Heheated the metal
第33题: [单项选择]This village which is surrounded by mountains is only ______ by river, and it is obvious that the transportation is inconvenient. A. accessible B. attainable C. available D. achievable 参考答案:A 答案解析:[解析] A项“accessible易接近的，可达到的”符合题意，如：An open minded person is accessible to reasons. (虚心的人易于服理。)其他三项“B
