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问题 填空题

（2分）铜和浓H2SO4共热，发生如下反应：Cu＋2H2SO4CuSO4＋SO2↑＋2H2O。该反应中氧化剂与还原剂的物质的量之比为         ，还原产物是          。

答案

1∶1，SO2（二氧化硫）

阅读理解
Tom and Gina usually go to school by car .They drive(驾车) pasta cinema a supermarket a post office. The post office is next to the supermarket on Center Street .Mary and Ann usually go to school by bus. They go down Sixth Avenue, past a bank and a library. The bank is across from the library. Jenny usually goes to work by bike,he rides(骑车) past a hotel and three streets．
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小题1:How many people are there in the passage(短文)?
A．Two．B．Three．C．Four．D．Five
小题2:Where is the post office?
A．It’s on Sixth Avenue
B．It’s between the Cinema and the supermarket
C．It’s in front of the school．
D．It’s next to the supermarket．
小题3:Who usually goes to school by bus?
A．Tom and Gina．B．Mary and Ann．C．Only MaryD．Jenny．
小题4:Where is the  library?
A．It’s on Center Street．B．It’s next to the bank．
C．It’s across from the bank．D．I don’t know．
小题5:Which is wrong？（错误 ） ．
A．Jenny usually goes to work by bike．
B．Jenny rides past a bank and a street．
C．Tom drives past a post office．
D．A bank and a library are on Sixth Avenue．
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解答题

一套西服原价是600元，现在打八折出售。现在买一套这种西服能便宜多少钱？
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