绘制直齿圆柱齿轮零件图时，必须先数清齿轮的齿数并且要测量齿顶圆直径。（）

根据所给句子，用所给的单词、汉语或首字母的适当形式填空 ，每空一词。

1. Tim has a strange bird,                name is dodo. (it)

2. Christmas is in the ________ month of a year. (12)

3. We are looking forward to ________ you at our party. (see)

4. The food we eat during our lives is the               of six elephants. (weigh)

5. If it is ________ tomorrow, we will go to the park. (sun)

6. They ________(计划) a trip to the Great Wall two days ago.

7. Simon is ________ (着迷的) about football so he often reads a book about football.

8. Our teacher went out without ________(说) a word.

9. The little boy has a good m               . He can remember things very quickly.

10. Neil is a b________ boy. He always helps those persons in danger.

2010年3月14日，十一届全国人大三次会议表决通过了选举法修正案，实行城乡按相同人口比例选举人大代表。此举    [ ]

A、是我国发展社会主义民主政治的重要举措  

B、体现人人平等、地区平等和民主平等的原则  

C、有利于统筹城乡发展、促进社会和谐  

D、有利于进一步扩大人民民主、保证人民当家作主

影响肺脓肿疗效的因素是（）

A.引流不畅，脓液不易排出

B.没有输血

C.抗菌药区剂量不足

D.没有绝对卧床休息

E.细菌耐药

常见的前纵隔肿瘤是

A．胸腺瘤
B．神经源性肿瘤
C．肉瘤
D．平滑肌瘤
E．支气管囊肿

重组