问题 填空题

(5分)摩尔是___________的单位,1mol任何物质中所含有的粒子数约为____          ____。1.5mol H2SO4的质量是________,其中含有_________mol O原子,含有______             ___个 H原子。

答案

(5分)物质的量、6.02×1023 、147g 、6、  1.806×1024

考查物质的量的概念及有关计算等。摩尔是表示物质的量的单位,1mol任何物质中所含有的粒子数约为6.02×1023;1.5mol H2SO4的质量是1.5mol×98g/mol=147g;其中含有1.5mol×4=6mol氧原子,而氢原子是1.5mol×2×6.02×1023/mol=1.806×1024

阅读理解

阅读理解。

     April 27 is a special day in Britain. It's called Take Our Daughter to Work Day. It was brought to Britain

in 1994 from America. On that day thousands of girls take a day off school and go with one of their parents

to their work places. By doing this, it can teach girls more about the society where they live.

     Now the girls can have a close look at what their parents are doing. This may help them to be calmer

when they have to choose a job. Mary experienced a day of work at her mother's office. This helped her

understand her mother's work better. She said that this made her feel more confident about her future. Schools

and many companies support the activity, too. Some schools even make the day a necessary part of school

life.

     Experts think that girls with more self-confidence are more likely (可能的) to be successful than common

girls. If parents can set good examples both at work and at home for them, they will do better than others.

Take Our Daughter to Work Day is surely a step in the right direction.

1. Where was Take Our Daughter to Work Day brought?

A. From America.

B. From China.

C. From Canada.

D. From Australia.

2. On Take Our Daughter to Work Day, thousands of girls _________.

A. go on a journey with their parents

B. have a party with their friends at home

C. go to the work places of one of their parents

D. take part in a school activity freely

3. What's the advantage by doing such an activity?

A. It can help girls understand their parents' work better.

B. It can teach girls more about the society.

C. It can make girls feel more confident about their future.

D. All of the above.

4. Which of the following is NOT true about Take Our Daughter to Work Day?

A. It is a special activity on April 27 in Britain.

B. Schools and many companies support this activity.

C. Many girls like this day because they won't go to school.

D. Some schools even make the day a necessary part of school life.

5. According to the experts, being _________ is the most important to girls in their future.

A. smart and careful

B. confident

C. hard-working

D. friendly

单项选择题 A1/A2型题