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问题 多选题

如图，物体G在平直路上受水平向右的恒力F作用，由A经B到C，且AB＝BC，已知AB段较粗糙，BC段较光滑，则在拉力下在AB段与BC段对重物做功大小关系不可能的是

[ ]

A、WAB＞WBC

B、WAB＝WBC

C、WAB＜WBC

D、以上三种情况都有可能

答案

ACD

完形填空

先通读下面的短文，然后根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整。所填单词必须在答题卷标有题号的横线上完整写出。 (本大题共5分，每格0.5分)

Success comes from good habits. The most important reason that helps you succeed is what you do every day. Your habits are so important that they will decide whether you are successful or not. If you have strong and healthy habits, it does not matter whether or not you f_________ 小题1:today because you are sure to succeed in the long run. Having positive habits does not mean that you will succeed every time. However, in the long term, there is no d_________ 小题2:that you will achieve your goals and be successful f_________小题3:

A positive action will not change your life, but the same action r_________ 小题4:one thousand times will have an important effect on your life. For example, if you listen to English only one time, you will not see a big d___________小题5:in your English study. However, if you listen to English one thousand times o________小题6:five years’ time, you’ll find you’ve made progress in English. The same applies to适用于health, relationships, work and school.

Everybody can change. A_________小题7:it takes is courage and persistence毅力.

Decide right now to improve your life by c__________ 小题8:your habits. Take actions right now! Don’t be afraid. You will probably make mistakes a__________ 小题9:the way, but never forget that success is there for you if you have good habits in your life. And if you r__________ 小题10:to give up, success will be yours.
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多项选择题

关于白色血栓，下列哪些描述是正确的（）。

A.白色血栓可见于风湿性心内膜炎

B.白色血栓主要由纤维素、血小板组成

C.白色血栓含化脓菌，故肉眼呈白色

D.风湿性心脏病时白色血栓机化可造成瓣膜变形

E.延续性血栓的头部亦是白色血栓
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