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问题 选择题
如图所示，是研究电流做功与哪些因素有关的实验电路，甲电阻丝的阻值小于乙电阻丝的阻值．比较通电后两根电阻丝各自通过的电流I甲、I乙以及它们在相同时间内电流做功的多少W甲、W乙的大小，下面关系中正确的是（　　）

A．I甲=I乙，W甲=W乙

B．I甲＞I乙，W甲＞W乙

C．I甲＜I乙，W甲＜W乙

D．I甲＞I乙，W甲＜W乙

答案

答案：B

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                                                  Keep in Touch
      You can keep in touch with your friends in many ways. You can call them. You can send letters
or e-mails to them. You can even use a website like Facebook to keep in touch with them. 
                                                     Touch Luck
      "Touch Lusk" is used when you feel sympathy (同情) about something bad that has happened to
someone. But it is also used when you don't have any sympathy for someone's problems.
                                                      Touch Screen
      You can find touch screens everywhere now. They are fun and easy to use! You touch the screen
to choose what you want. Many mobile phones and music players have touch screens. Many ATMs
have them,too. You can also use them to buy tickets.
                                                      Touchdown
    When you watch an American football game, you will hear the word "touchdown". A touchdown
happens when a player carries the ball across the other team's goal (球门) line. When a player makes
a touchdown, he scores (得分) six points for his team! 
                                                    The Midas Touch 
      Midas was a king in an old Greek story. He loved money very much! He wished that everything
he touched would turn to gold. His wish came true. Everything he touched-His furniture, his food, and
even his daughter-turned to gold.
1. —I didn't get the job. —Oh,________!
2. I often ________ with my friends by chatting on QQ.
3. If someone has "________", he is very good at making money.
4. Last night the football team needed just one more ________ to win the game.
5. The mobile phone doesn't work,because something is wrong with the ________.
A. keep in touch  B. touch with  C. touch screen 
D. touchdown  E. the Madis touch
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选择题

与流入小肠壁的血液相比，流出的血液中所含成分变化最大的是（     ）

A．氧的含量增加了

B．二氧化碳的含量减少了

C．营养物质增加了

D．食物残渣减少了
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