A、8:00. B、7:30. C、0.291667 D、0.354167 A本题考查简单运算能力。从对话中我们了解到男士催促女士抓紧时间，演讲八点半就要开始了。女士答，不着急，我们还有半个小时呢。两个数据相减，得出正确答案选项A(8点)。

M: If it does not rain, let’s go out for a walk this evening.
W: I’d love to, but I have to look after my baby.
Q: What will the woman probably do this evening?

M: You’d better hurry, Jenny. There isn’t much time left. The lecture is to begin at 8:30.
W: Don’t worry. We still have half an hour to go, anyway.
Q: What time was it when the conversation took place?