写出下列单词的空缺部分.

s __ l __ d

写出下列单词的空缺部分.

s __ l __ d

如图所示是长度为L＝8.0m水平传送带，其皮带轮的直径为d＝0.40m，传送带上部距地面的高度为h＝0.80m。一个旅行包（视为质点）以v₀＝10m/s的初速度从左端滑上传送带。旅行包与皮带间的动摩擦因数μ＝0.60。g取10m/s²。求：
（1）若传送带静止，旅行包滑到B端时，若没有人取包，旅行包将从B端滑落到地面上，则包的落地点距B端的水平距离为多少？
（2）当皮带轮顺时针匀速转动，其角速度为ω₀="20" rad/s时，求旅行包在皮带上运动的时间与旅行包落地时的速度；
（3）设皮带轮以不同的角速度顺时针匀速转动，画出旅行包落地点距B端的水平距离s随角速度ω变化的图象（ω的取值范围从0到100 rad/s）。

请认真阅读下面短文，并根据各题所给首字母的提示，写出一个合适的英语单词完整、正确的形式，使短文通顺。

I’ve got some information for everyone going to Britain next month. As you know, you’ll be staying with a f______ for two weeks. Now the most important thing is m______. You should take about￡300.When you a_______ at the airport you’ll be met by your host family. You must remember to w______ a red shirt so the family will find you e_______. I’ve told them to look out for the red shirts. You’ll also need to take four p______ of yourself with you, for they will be used to stick on your certificates. Of course, it’s very important that you take the school letter. While you are there, if you have any problems, you can c______ our agent. I’ll give you her office phone n_______. It’s 580-4436 and the person to ask for is Mrs. Lewis, that’s L-E-W-I-S. She’s in the office f_______ 9:00 am to 5:00 pm every day. OK! That’s everything. Have a good t______.

 

词汇运用。(共10小题，计10分)

（A）根据下列句子及所给汉语注释，写出空缺处各单词的正确形式，每空只写一词。

1.Many people do not understand the ____________ （重要性）of the wetlands..

2.Pay some _____ （注意） to what you are doing .

3.He s______ three days with his grandparents last summer.

4.Please be _______（耐心）. The bus is coming here on time.

5.Though all of them speak English, yet they speak     （不同地）

（B）在下列各句的每个空格内填上一个适当的单词，该词的首字母已给出。

6. His father’s d____ made him very sad .

7.You can’t get there on time u__________ you take a taxi.

8.Hurry up. There is no time for you to w_______.

9.You can’t drive the car because you don’t get a driver’s l_______ .

10.Please answer this question with a c_______ sentence.