若平行四边形的一边长为5，则它的两条对角线长可以是（ ） A．12和2 B．3和

阅读短文，根据内容回答问题。

     Maybe you are more interested in sports than in history you probably think you will never be a top

student. In fact, anyone can become a better student if he or she wants to. If you can use your time

well, you may improve your study without much work. Here's how:

     Plan your time carefully. When you plan your week time, you should make a list of things that you

have to do. First write down the time for eating, sleeping, dressing, etc. then decide on a good time for

studying. Of course, studying shouldn't take all of your time. Don't forget to leave yourself enough time

for hobbies.

     Find a good place to study. Look around the house for a good study place. Keep this space, which

may be a desk or just a corner of your room. No games, radio, or television! When you sit down to work,

think only about the subject!

     Make good use of your time in class. Listen carefully to what the teacher says. Careful listening in class

means less work later. You also need to take notes in class, because it can make it easier for you to learn

well.

     There are only a few ways mentioned here to help you with your studying. I believe you can find many

other ways besides these.

1. Can anyone become a better student if he or she wants to? 

    ___________________________________________________________________________

2. How many ways does the author mention?

    ___________________________________________________________________________

3. Why does the author ask you to leave enough time for hobby?

    ___________________________________________________________________________

4. If you want to make good use of your time in class, what should you do?

    ___________________________________________________________________________

5. What's the passage mainly about? 

含有糖苷结构的药物有（）

A.硫酸阿米卡星

B.克拉霉素

C.琥乙红霉素

D.多西环素

E.罗红霉素

老虎之死（10分）

兽有猱，小而善缘，利爪。虎首痒，辄使猱爬搔之，久而成穴，虎殊快，不觉也。猱徐取其脑啖之，而以其余奉虎，虎谓其衷，益爱近之。久之，虎脑空，痛发，迹猱，猱则已走避高木。虎跳踉大吼，乃死。

小题1:解释下列句子中划线词。（4分）

（1）小而善缘（ ）   （2）辄使猱爬搔之（       ）

（3）益爱近之（ ）   （4）久之（       ）

小题2:用现代汉语写出下列文言句子的意思。（4分）

（1）久而成穴，虎殊快，不觉也。

（2） 猱徐取其脑啖之，而以其余奉虎。

小题3:读了这则短文，你有什么启示？（请不少于两点）？（2分）

精子尾部低渗肿胀试验中，其尾部完全肿胀的精子属（）

A.g型

B.e型

C.d型

D.b型

E.a型

称重传感器是一种通过把被测质量转换成（）来测量力的传感器。

A、重量和重力；

B、电量或机械量；

C、电磁量或电感。