石油中轻质油组分增加，粘度（）。A、升高 B、不变 C、降低 D、波动

正常情况下，血液在血管内不发生凝固的主要原因是()

A．纤溶活性增强

B．血管内膜光滑完整

C．纤溶系统作用

D．有抗凝物质存在

E．血液流动快

将正方形A的一个顶点与正方形B的对角线交叉重合，如图⑴位置，则阴影部分面积是正方形A面积的，将正方形A与B按图⑵放置，则阴影部分面积是正方形B面积的（     ）。

— Is this your pen? 

— _____. It's Tony's pen. [ ]

A. Yes, it is

B. No, it isn't

C. Yes, I am

D. No, I am not

    以创新地为中心，向周围地域连续扩散，随着距离的增加，扩散强度逐渐减弱。这种技术的地域扩散形式为[ ]

A、近邻扩散

B、等级扩散

C、位移扩散

D、空间扩散

阅读理解。

     One of my favorite posters says, "Life is a test. It is only a test. Had this been a real life, you would have

been instructed where to go and what to do." Whenever I think of this humorous bit of wisdom, it reminds

me not to take my life so seriously.

     When you look on life and its many challenges as a test, or series of tests, you begin to see each issue you

face as an opportunity to grow, a chance to discover more about life. Whether you're being bombarded with

problems, responsibilities, or even insurmountable (不能超越的) difficulties, when looked on as a test, you

always have a chance to succeed, in the sense of overcoming what is challenging you. If, on the other hand,

you see each new issue you face as a serious battle that must be won in order to survive, you're probably

meeting with a very rocky journey. The only time you're likely to be happy is when everything is working out

just right. And we all know how often that happens.

     As an experiment, see if you can apply this idea to something you are forced to deal with. Perhaps you

have much pressure from your parents or you have a demanding boss. See if you can redefine the issue you

face from being a "problem" to being a test. Rather than struggling with your issue, see if there is something

you can learn from it. Ask yourself, "Why is this an issue in my life? What would it mean and what would be

involved to overcome it? Could I possibly look at this issue any differently? Can I see it as a test of some kind?" 

     If you give this strategy (策略) a try, you may be surprised at your changed responses. It has become far

more acceptable to me to accept things as they are.

1. When you begin to look on life as a test, you will find ____.

A. you are bombarded with problems and responsibilities

B. you're meeting with a very rocky journey

C. you have many opportunities to grow

D. you have to go to school to take tests every day

2. When you see each new issue as a serious battle, you ____.

A. will have more chances to succeed

B. are likely to become happy all your life

C. will know how often it happens

D. are probably to experience a bitter life

3. According to the passage, you'd better look on life as a test when ____.

A. you try to get the meaning of the poster

B. you have an easy-going boss

C. you are carrying out an experiment

D. you are in a rocky journey

4. According to the passage, what is the author's attitude towards life?

A. He considers life as a test.

B. He doesn't dare face his hard life.

C. He thinks life is full of humorous wisdom.

D. He thinks life is not only a test but also a serious battle.