钻孔冲洗液在孔内循环主要起的作用错误的有（）。A、增大钻进效率 B、清洗孔底和携带岩粉

该病人手术后最危急的并发症是

A．呼吸困难和窒息

B．双侧喉上神经损伤

C．一侧喉返神经损伤

D．甲状腺危象

阅读理解。

     Jim is in a drawing class. The teacher is teaching the students how to draw mountains. Jim likes to draw, but he isn’t good at drawing mountains. So he looks at Wei Hua’s drawing. Her mountain is higher than David’s. Jim then looks at Lin Tao’s mountain. His is the highest of all. Jim thinks he doesn’t like high mountains, but he doesn’t know what to draw. He decides to look at some more drawings. Jim looks at Lucy’s mountain. Her mountain is small. Lily says, “Look at mine, Jim.” Lily’s mountain is smaller than Lucy’s. Jim wants to look at one more mountain. He looks at Liz’s. Hers is the smallest of all. Then Jim looks at the teacher’s mountain on the blackboard again. He starts to draw. At the end of the class the teacher has a look at their pictures and takes out three drawings. He says, “David’s drawing is good. Lily is better than David’s, but Jim’s is the best of all.”

1. What class is Jim having?     

A. A music class.  

B. A drawing class.    

C. A P.E. class.  

D. A geography class.

2. Whose mountain is the smallest?     

A. David’s.        

B. Lin Tao’s.        

C. Lily’s.        

D. Liz’s.

3. How many pictures does Jim look at before begins to draw his picture?     

A. Five.          

B. Six.              

C. Seven.        

D. Eight.

4. Which of the following is NOT true?

A.Jim is good at drawing mountains.  

B. The teacher draws a picture on the blackboard.

C. Jim doesn’t like high mountain.      

D. Lily’s picture is better than David’s.

5. What’s the best title of this article?  

A. How to Draw Mountains Well          

B. Jim’s Hobby

C. Jim’s Art Class                      

D. A Beautiful Mountain

关于盲道的设置，以下( )项规定是错误的。

A．盲道宜避开井盖铺设

B．盲道应连续，中途不得有电线杆、拉线、树木等障碍物

C．盲道的颜色宜为浅红色

D．盲道的表面触感部分以下的厚度应与人行道砖一致

中 * * 政治局会议定调2012年宏观经济政策时要求，“实施积极的财政政策和稳健的货币政策”，但在今年的会议中删去了该说法，保留了“保持宏观经济政策的连续性和稳定性”，并将“及时作出预调、微调”改成“适时适度进行预调微调”。上述改变符合的哲学道理是（）

A.量变到一定的阶段必然会引起质变

B.辩证的否定就是对过去的全面否定

C.真理的相对性、绝对性和具体性

D.上层建筑要与经济基础的状况相适应