占空比控制电磁阀型怠速控制阀的结构主要由（）、（）、（）等组成。

第一节 完形填空（共10小题；每小题2分，满分20分）

阅读下面短文，掌握其大意，然后从21~30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

My father believed that there was mysterious forces at work in the world. One day, when he was lecturing me on these tales, a neighbour woman suddenly entered, with two geese in hands. She smiled   21   and looked frightened.

“Yusef, I have a very    22    problem. These dead geese, they keep shrieking in such a sad voice…”.

My father turned pale. “But dead geese don’t shriek,” my mother cut in.

“You’ll hear for yourself,” replied the woman. And so it happened. It is impossible to   23    what I heard. My hands grew    24    and I wanted to run from the room.

Father was no less    25    than I was. He jumped away from the table. Just then, for the second and the third time, the shriek came again. “Well, I didn’t   26    it, did I?”

Suddenly my mother laughed. “Did you   27    the windpipes?” my mother asked.

“The windpipes? No…”.

Mother took hold of one of the geese, and pulled out the windpipe. She did the same with the other one. I was surprised by my mother’s    28    . “Now, try it again.” I was    29     to hear the geese shriek, but they were dead silent.

“There is always a(an)  30   . Dead geese don’t shriek,” said my mother. “Now go home and cook them for the meal. They won’t make a sound in your pot.”

21. A. nervously                   B. cheerfully                 C. jokingly                   D. surprisingly

22. A. simple                       B. sudden                     C. unusual                    D. interesting

23. A. remember                  B. understand                C. describe                   D. bear

24. A. hot                                   B. cold                         C. still                          D. hard

25. A. curious                      B. excited                     C. frightened                D. interested

26. A. mean                         B. notice                      C. design                      D. imagine

27. A. remove                      B. change                            C. break                       D. block

28. A. action                        B. courage                    C. strength                    D. speed

29. A. trying                        B. pretending                C. expecting                 D. preparing

30. A. fact                           B. truth                        C. method                    D. explanation

不属于良性自愈型的是（）

A.纤维皮质缺损

B.孤立性骨囊肿

C.骨巨细胞瘤

D.外生软骨瘤

E.内生软骨瘤

仿照下面的示例，自选话题，另写两句话，句式与示例相同。

冬日里，阳光总显得那么可爱。它温情柔媚，不热烈不浮躁，轻轻地抚慰着每颗寒冷的心。

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涂片中通常作为测定其他细胞大小的标尺细胞是( )

A．红细胞
B．中性粒细胞
C．嗜酸性粒细胞
D．淋巴细胞
E．浆细胞

汽轮机损失分为外部损失和内部损失两种，对蒸汽的热力过程和状态不发生影响的损失称内部损失；对蒸汽的热力过程和状态发生影响的损失叫外部损失（）