用气压计测量大气压时,能使气压计示数变小的是[ ]
A. 把气压计从山顶拿到山脚下
B. 天气由晴转阴雨
C. 季节从夏季转到冬季
D. 把气压计从室内拿到室外
答案:B
在空白处填入适当的句子补全对话。
A: Hello, 88261210.
B: Hello. ___1___
A: Yes. This is Lingling speaking.
B: Hi, Lingling. You like listening to the radio. ___2___
A: The radio says it’s going to be sunny these days.
B: Good! What are you going to do for the spring field trip?
A: Nothing much. Why?
B: Our classmates plan to go on a four-day visit to Beijing___3___
A: Sure! I'd love to. Will we go there by bus or by train?
B: ___4___ I love to go by bus. What about you?
A: I love to go by train. You see, going by bus doesn’t cost as much as by train, and going by bus isn’t as comfortable as by train.
B: Yes. Most of the classmates love to go by train. Let's go there by train. ___5___.
A: Yes, I am. And I can go to find out the information about the tickets at once. See you.
B: Thank you. See you.
( )是以基年价格水平表示的,反映相对价格变动因素影响的价格。
A.基价
B.时价
C.实价
D.以上均不正确