问题 选择题

如图所示为一恒压容器.在恒定温度下,将1molN2和3molH2混合后由A 口快速充入封闭容器,反应N2+3H2⇌2NH3在t1时刻达到平衡,t2时刻再从A口快速充入一定量NH3,封闭A,t3重新达平衡至t4.在0→t4时间内混合气中NH3的体积分数(纵坐标)随时间(横坐标)变化的曲线正确的是(  )

A.

B.

C.

D.

答案

答案:C

阅读理解

     Too many people want others to be their friends,but they don't give friendship back. That is why

some friendships don't last very long. To have a friend,you must learn to treat your friend the way you

want your friend to treat you. Learning to be a good friend means learning three rules: be  honest;

begenerous (宽宏大量的 ) ; be understanding.

    Honesty is where a good friendship starts. Friends must be able to trust one another. If you don't tell

the truth, people usually find out. If a friend finds out that you haven't been honest,you may lose your friend's  trust. Good friends always count on one another to speak and act honestly.

        Gerierosity(大度) means sharing and sharing makes a friendship grow. You don't have to give your

lunch money or your clothes,of course. Instead you have to learn how to share things you enjoy, like your hobbies and your interest.s. Naturally you will want to share your ideas and feelings. These can be very

valuable to a friend. They tell your friend what is important to you. By sharing them you help your friend

know you better.

       Sooner or later everyone needs understanding and help with a problem. Something may go wrong at

school. Talking about the problem can make it easier to solve(解决). Turning to a friend can be a first

step in solving the problem. So to be a friend you must listen and understand. You must try to put yourself

in your friend's place so you can understand the problem better.

         No two friendships are ever exactly alike(相同). But all true friendships have three things in

common. If you plan to keep your friendships,you must practise honesty, generosity and understanding.

1. Some friendships don't last very long because_______.    

A. there are too many people who want to make friends

B. they don't know friendship is something serious

C. those who give others friendships receive friendships from others

D. those who never give others friendships receive no friendship from others

2. According to the passage honesty is_______.

A. as important as money

B. more important than anything else

C. something countable

D. the base of a friendship

3. Which of the following is NOT true according to thepassage? 

A. A friend who gives you his lunch money is a truefriend.

B. Always tell your friend the truth.

C. Discussing your problem with your friend often helpsto solve the problem.

D. Sharing your mind with your friend is of great value.

4. According to the author, how do you help your friend know you better? 

A. Ask your friend for everything.

B. Don't tell the truth to your friend.

C. Share your ideas and feelings with your friend.

D. Give your lunch money or your clothes to your friend.

5. The best title of this passage is ________.  

A. A Friend in Need Is a Friend Indeed

B. Honesty Is the Best Habit

C. How to Be a Friend

D. Three Important Points in Life

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