下列何药抗结核杆菌作用最强： A．吡嗪酰胺 B．利福平 C．乙胺丁醇 D．链霉素 E

相对定期预算而言，滚动预算的优点有( )。

A．透明度高

B．及时性强

C．预算工作量小

D．连续性、完整性和稳定性突出

在下列对话的每个空格中填上一个词，使对话完整、正确。

A: What's 1____________ with you?

B: I 2_____________ a terrible toothache.

A: How 3______________ have you had this toothache?

B: 4______________ months. I have been losing sleep.

A: You mean the pain's been keeping 5_____________ awake.

B: Yes. And what's worse, I can't eat 6______________.

A: Let me see. Ah, yes, 7____________ is a hole. It is very bad and it will be pulled 8___________.

B: Will you pull it out now?

A: I'm afraid not. You'd 9____________ wait. Take these pills three 10___________ a day and come back in     

    three days.

关于牙龈癌的叙述，哪项是错误的（）

A.多为鳞癌

B.男性多于女性，以溃疡型最多见

C.早期向牙槽突及颌骨浸润，使骨质破坏

D.下牙龈发病率高于上牙龈

E.上牙龈癌比下牙龈癌淋巴结转移早

实现全面建设小康社会的宏伟目标是什么？

我国荒漠化类型从动力成因的角度划分为哪几种类型？