问题
实验题
某班同学在用皮尺和秒表测平均速度时，四位计时员记录了王军同学跑步通过10m、20m、30m、40m处的时刻，并记录在下表中。
（1）从20m处到40m处的平均速度为 _______m/s
（2）全程的平均速度为_________m/s。
答案
（1）5
（2）4.35
搜题请搜索小程序“爱下问搜题”
某班同学在用皮尺和秒表测平均速度时，四位计时员记录了王军同学跑步通过10m、20m、30m、40m处的时刻，并记录在下表中。
（1）从20m处到40m处的平均速度为 _______m/s
（2）全程的平均速度为_________m/s。
（1）5
（2）4.35
| 完形填空。阅读下面的短文，选择适当的词。 | |||
| It was Sunday. I never get up early 1__________ Sundays. I sometimes stay in 2__________ until lunchtime. Last Sunday I 3__________ very late. I looked out of the window. It was dark outside. " What a day! " I thought. " It's 4__________ again." Just then, the telephone rang. It 5__________ my aunt Lucy. " I've just arrived 6__________ train," she said, " I'm coming to 7__________ you." " But I'm still having breakfast." I said. " What are you 8__________? " she asked. " I'm having 9__________." I repeated. " Dear me," she said. " 10__________ you always get up so late? It's one o'clock."
|