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问题 选择题

下列实验操作正确的是

答案

答案：D

A.干燥氧气，应该长管进，短管出；

B.测定pH值，用洁净玻璃棒蘸取待测液，滴在pH试纸上，和标准比色卡相比较，得到pH；

C.量取9.0ml液体，应该采用10.0ml量筒。

点评：考查化学实验中的基本操作；

完形填空

Olympic torch relay around the world

The Beijing 2008 Olympic Torch Relay (火炬接力) will travel the longest distance, cover the greatest area and include the lar­gest number of people. On March 25,Olym­pic Flame (火种)will be lit (点燃) in Greece.

Route Distance: 137 000 km Time: 130 days

Route:March 31,Torch Relay starts in Beijing→.London→Paris→San Francisco.. →Hong Kong..→Beijing

Torch Length:72 cm Torch Weight:985 grams Design: It is based in the shape of a paper scroll (卷) with lucky clouds on it.

It can stay lighted (燃烧的) in bad weather conditions.

根据以上信息填空，每空填一词。

The Beijing 2008 Olympic Torch Relay will travel a 小题1:(76) distance than before. It will take more than 小题2:(77) months to travel around the world. The Torch Relay will start in the city of小题3:(78) . The torch is 小题4:(79) cm long and 985 grams heavy. It looks like a paper scroll. Bad weather can’t     小题5:(80)    the torch from burning.
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选择题

下列关于硫酸性质的描述中，正确的是                     [ ]

A．浓H2SO4有氧化性，稀H2SO4无氧化性

B．由于浓H2SO4具有脱水性，所以可用做干燥剂

C．稀H2SO4与铜不反应，浓H2SO4在加热条件下可与铜反应

D．在受热的情况下浓硫酸也不与铁、铝发生反应
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