问题 实验题

下图是实验室中用于制取和收集气体的装置图。

(1)写出上图中带标号仪器的名称:①_____________,②_____________。

(2)写出实验室用高锰酸钾制氧气的化学方程式___________________________。

(3)利用B、C装置能进行的实验是____(填序号)。

①用高锰酸钾制取氧气;②用石灰石与稀盐酸制取二氧化碳;③用锌与稀硫酸制取氢气(氢气难溶于水);④用双氧水与二氧化锰制取氧气

(4)氧气和二氧化碳均可使用的收集方法是____(填序号)。检验氧气已收集满的方法是____________。

答案

(1)①分液漏斗;②集气瓶

(2)2KMnO4K2MnO4+MnO2+O2

(3)③④

(4)E;将带火星的木条放在集气瓶口,木条复燃证明已收集满

阅读理解

The most important holiday in spring, especially for Christians, is Easter. This Christian holiday is not on the same date every year,but it’s always on a Sunday. It can be any Sunday between March 22 and April 25. Many people celebrate Easter by buying new clothes. Children celebrate by hunting for colored eggs that their parents have hidden around the house. People also give Easter baskets filled with candy and other goodies to one another to celebrate the day.

But the holiday is more than new clothes and good things to eat. On Easter, many people go to church to celebrate Jesus’ resurrection(复活)from the dead. Most people color Ester eggs. Some people hide them. Others just eat them. But no matter what one does with Easter eggs,they are an important Easter tradition across the Western world. People from many different cultures celebrate Easter. In both America and Belgium, children look for Easter eggs hidden on grass and in bushes(灌木丛). In America, children believe the eggs are hidden by the Easter rabbit.But in Belgium, the hidden eggs are supposed to have fallen from church bells. In Bulgaria (保加利亚), red Easter eggs are lucky in churches. Bulgarian families also hit these Easter eggs together to see whose is the strongest. The winner looks forward to good fortune(运气) that year. Still dozens of other Easter traditions exist. In parts of Austria,for example,children sing from door to door and are rewarded with colorful eggs.

小题1:To celebrate Easter, people ___________.

A.go shopping, hide colored eggs and children hunt for them

B.give Easter baskets filled candy and goodies to one another

C.buy new clothes, hide colored eggs and children look for them around the house

D.both B and C小题2:For Christians the more important thing to do on Easter is________.

A.going to church to celebrate Jesus’ resurrection

B.buying new clothes

C.eating delicious food and paint color eggs

D.exchange beautiful gifts each other小题3:People from different cultures have different ideas about Easter egg _________.

A.In both American and Belgium, children hunt for Easter eggs hidden in rooms and in bushes

B.In Belgium, the hidden eggs are thought to have fallen from doorbells

C.In American, children believe the eggs are hidden by the Easter bunny

D.In America, the hidden eggs are supposed to have fallen from doorbells

判断题