第8题: [单项选择]As far as I know, the production of this factory has doubled this year, and the quality of its products has been improved __________. A. since then B. by then C. until now D. as well 参考答案:A
第11题: [单项选择]齐墩果酸结构类型是 A. 螺旋甾烷型 B. β-香树脂烷型 C. α-香树脂烷型 D. 羽扇豆烷型 E. 达玛烷型 参考答案:B 答案解析:齐墩果酸属于齐墩果烷型五环三萜,齐墩果烷型又称β-香树脂烷型。
第12题: [单项选择]In a football game what is equal to the prey in hunting is ______. A. any member of the opposing team B. the goal keeper C. the goal-mouth D. the football 参考答案:C 答案解析:[注释] 与狩猎的猎物相等,在足球比赛中是球门。见第一段后面His killing weapon has turned into a harmless football and his prey(猎物