下图中等高线的高程为米，读图回答下列问题。当地有关部门计划在a、b两山顶之间利用山地

Is there_______today's newspaper?   [ ]

A. something new in        

B. anything new in

C. new something at        

D. new anything at

填空题

1. She does her homework            (careful) than I do.  

2. My father ate             (slow)  in my family.  

3. The old man walked too slow             (follow)  the others.  

4. He is becoming                         (interested) in sports.  

5. Mary came                     (much quick) than you did.

职业肿瘤主要多见于（）。

A、呼吸道

B、皮肤

C、膀胱

D、肝

E、呼吸道、皮肤及膀胱

区分左、右肝叶的标志有（）①肝正中裂②肝中静脉③静脉韧带④镰状韧带

A.①

B.①②

C.③

D.③④

E.④

总空气过滤器填装后正常的压力降应在什么范围？如何保证达到这个范围？