【单选题】下列关于旅游交通概念的说法不正确的是( )。
B.
运载工具是指飞机、火车、汽车、船舶、缆车等运输工具
【单选题】听力原文:W: Have you been to the new sports centre yet? M: I certainly have. I joined the fitness club on Monday and I met another squash player there. We're going for a game this evening. W: I signed up ...
A.
Because she wants to keep fit.
B.
Because the sports centre only offers aerobics classes for women.
C.
Because that was the only class she knew about.
【简答题】与技术革命相对应,世界工业经历了三次工业大飞跃,三次飞跃分别使工业进入 阶段、 阶段和 阶段。
【单选题】下列哪些生物活性物质并非由肾脏分泌:( )
【单选题】根据育龄女性体温随着孕激素分泌的周期变化的原理,可以初步测定的女性周期是