第9题: [单项选择]门静脉主干是由下列哪几条静脉汇合而成 A. 肠系膜上静脉和脾静脉 B. 肠系膜上、下静脉和胃网膜右静脉 C. 肠系膜上、下静脉和胃冠状静脉 D. 肠系膜上静脉和肠系膜下静脉 E. 肠系膜下静脉和脾静脉 参考答案:A 答案解析:门静脉主干由肠系膜上静脉和脾静脉汇合而成,肠系膜下静脉汇入脾静脉。
第11题: [单项选择]下列选项中关于环境影响预测范围的说法,错误的是()。 A. 预测点的位置应覆盖现状监测点 B. 预测点数量应大于或等于现状监测点 C. 预测范围应大于或等于现状调查的范围 D. 根据工程和环境特征以及环境功能要求而设定 参考答案:C 答案解析:C项错误,预测范围应等于或略小于现状调查的范围。
第23题: [单项选择]A. They shouldn’t make too many requests. B. They should ask for further extension. C. They should finish the project as scheduled. D. They should not try their luck. 参考答案:A 答案解析:[听力原文] W: Since Professor Williams is willing to give us a three-day extension to finish the proj