第19题: [单项选择]Questions 19 to 22 are based on the conversation you have just heard.[A] By name. [C] By location. [B] By number. [D] By month. 参考答案:A 答案解析:[听力原文] How do weather forecasters identify hurricanes
信息明示题。女士说气象预报员用人名给风暴命名以便于区分,所以A正确。
第20题: [单项选择]地球表层由厚度为()的岩石层板块组成。 A. 80~100多千米 B. 80~100多万米 C. 20~40多千米 D. 20~40多万米 参考答案:A