解方程。（1）20%x+35%x=1.1（2）（1-45%）x=16.5（3）7_爱下问搜题

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问题计算题

解方程。

（1）20%x+35%x=1.1

（2）（1-45%）x=16.5

（3）70%x-25x=18.9

答案

（1）20%x+35%x=1.1

　　　　55%x=1.1

　　　　　　x=2（2）（1-45%）x=16.5

　　　　55%x=16.5

　　　　　　x=30（3）70%x-25x=18.9

　　　45%x=18.9

　　　　　x=42

阅读理解

We’ve Moved!
Please come to the party in our new house.
8:00pm.on November 5
Betty and Jack
Add:31 Station Street
Tel:342-1525
E-mail:betty12@email.net

Must Sell $275
Best washing machine
Only 6 months old
Owner going abroad
Call Mike Green
Add:10 Park Street
Tel:342-2691
E-mail:mikegreen@hotmail.com

Smith^’s Book Club
New and old books
Over 1,000 kinds
Good coffee and tea
Open every day 10:00 to 22:00
Add:15 North Street
Tel:342-7391 or 342-7350
E-mail:smith15@yahoo.com

小题1:If you want to go to Betty and Jack^’s party, you can call .

小题2:Mike Green has to sell his washing machine because .

A．he wants to buy a new one	B．he will go to another country
C．he wants to buy a new house	D．There^’s something wrong with it

小题3:You can use the e-mail smith15@yahoo.com if you want to .

A．read some books	B．go to a family party
C．sell some good coffee	D．buy a washing machine

填空题

“二级”应急事件包括：动力机械停机、井架、底座及悬吊系统故障、（）、井下异常、井涌、触电、中毒等。