问题 选择题

将足量的气体分别通入相应的溶液,下列实验一定可以得到沉淀的是   [    ]

A.将SO2通入BaCl2溶液

B.将HCl通入NaAlO2溶液

C.将Cl2通入AgNO3溶液

D.将CO2通入Ca(OH)2溶液

答案

答案:C

阅读理解

任务型阅读.

      

     As an American, I was surprised to learn that Chinese students must be good at sports in order toget a top grade in PE class. In the US, all you have to do to get an A in PE class is to show up in proper gym

clothes and look like you  are trying. 

    This is lucky for kids like me who aren't great at sports. At my school, we had PE class twice a week. Every  (无法处理) few weeks, we changed the activity we were doing. For a few weeks we played

football. that was okay-I was good al it.  But then we switched(转换)  to baseball,  and I was hopeless. I couldn't hit the ball at all!

      Luckily, under the American system, trying my best was enough. When I missed the ball, I knew it

didn't matter.  I'd still get a good grade.

      During the school year, we played many different sports, including American football. badminton,

gymnastics(体操) , tennis, golf', swimming and rock climbing.  Every few months, we spent a few weeks in health class.  Instead of going outside or to the gym, we sat in a classroom, and nobody and first aid (急救). 

     At PE classes, we learned a little, exercised a little, and had lots of fun.

根据短文内容,完成下列各题.

1. The Chinese students must be good at sports in order to             .

2. The writer is an American and is not              sports.

3. If you are a student in an American school, you are not good at sports but you still          .

4. During the American school year, the students have many different PE classes like            .

5. The students in America can learn a little,               a little and have lots of fun at PE classes.

单项选择题