第22题: [单项选择]{{B}} Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. He has almost finished carrying the boxes. B. He is grateful to find a helper. C. It might be too heavy for her to lift. D. A lot of boxes of books are waiting to be carried. 参考答案:C 答案解析:[听力原文]
W: You look rather tired. Can I help you with those boxes of books
M: Thanks, but they wei
第23题: [简答题]据说有些单亲家庭的孩子生活很悲惨。 参考答案: 答案解析:It is said that in some single-parent families children live a miserable life.
第32题: [单项选择]钢中奥氏体和珠光体的相结构是() A. 两者均为固溶体 B. 两者均为混合物 C. 前者是固溶体,后者是混合物 参考答案:C
第33题: [单项选择]女性不孕因素错误的是 A. 输卵管不通 B. 双角子宫 C. 排卵障碍 D. 子宫内膜异位症 E. 乳房发育不良 参考答案:E 答案解析:[考点评析] 女性不孕因素:排卵障碍,输卵管因素,子宫因素,宫颈因素,阴道因素。 男性不育因素:精液异常,性功能异常,免疫因素:抗精子抗体。 男女双方因素:缺乏性生活的基