问题 多选题
如图所示,两端封闭的U形管位于竖直平面内,A、B管中一定质量的理想气体处于室温状态,开始时A、B管中的水银面相平,现使U形管在竖直平面内顺时针转过一个不大的角度,待管中水银柱稳定后,保持管转动后的姿态不变,则(   )

A.将整个U形管放入热水中,B管中的水银面将下降

B.将整个U形管放入热水中,两管中的气体压强将相等

C.让U形管自由下落,B管中的水银面将下降

D.让U形管自由下落,两管中的气体压强将相等

答案

ACD

阅读理解

任务型读写。

     Think of life as a game in which you are playing with five balls in the air. You name them work, family,

 health, friends and spirit (精神) and you keep all of them in the air. You will soon understand that work is

  a rubber ball. If you drop it, it will bounce (弹跳) back.

     But the other four balls, family, health, friends and spirit, are made of glass. If you drop one of these,

 they will be broken. They will never be the same. You must understand that and try to have balance in

 your life. How?

     Don't look down on your worth by comparing yourself with others. It is because we are different and

 each of us is special.

     Don't let other people set goals for you. Only know what is best for yourself.

     Don't give up when you still have something to give. (3)Nothing is really over until the moment you stop

  trying.

     Don't be afraid to fight difficulties. It is by taking chances that we learn how to be brave.

     Don't shut love out of your life by saying it's impossible. (4) The quickest way to receive love is to give

  it; the fastest way to lose love is to hold it too tightly (紧紧地); the best way to keep love is to give it

 wings.

     Don't run through life so fast that you forget not only where you've been, but also where you are going.

     Don't be afraid to learn. Knowledge is weightless. It's a treasure (珍宝) you can always carry easily.

     Don't use time or words carelessly. You can't get them back.

     Life is not a competition, but a trip, step by step.

     Yesterday is history, tomorrow is a mystery (秘密), and today is a gift: that's why we call it "the

 present".

A)根据短文内容简要回答问题。

1. What ale the five balls of life?

    _______________________.

2. Please say something about knowledge according to the passage·

    _______________________.

B)将短文中画线的两个句子译成汉语.

3. _______________________.

4. _______________________.

C)请给短文拟一个适当的标题.

5. _______________________.

单项选择题