计算机网络拓扑是通过网中结点与通信线路之间的几何关系表示网络中各实体间的______

根据句意完成已给出首字母的单词，使补全后的句子语法正确，意义通顺。

1. He made great p           in spoken English.

2. — What's the c           like in Africa?

    — Oh, it's hot and rainy.

3.After entering the WTO, more f           will come to our country for business.

4. Macao was taken back by China at the end of the t           century.

5. My friends e           me not to give up and keep on fighting.

6. The disabled person came across many d           when he sailed around the world.

7. Many animals died on the island because people destroyed the e           of the island.

8. My k           of chemistry is very poor.

9. If you want keep something a m          , keep your lips closed.

10. Most of the things which were described in the book The A           of Tom Sawyer

      really happened to the writer himself.

女性，29岁，咳嗽、咯血伴有发热二周，痰抗酸杆菌涂片（+++），首选哪项治疗方案

A．异烟肼+利福平+乙胺丁醇9个月
B．异烟肼+利福平+吡嗪酰胺2个月，继续异烟肼+利福平4个月
C．对氨基水杨酸+链霉素+利福平2个月，继续异烟肼+利福平4个月
D．异烟肼+链霉素+对氨水杨酸18个月
E．异烟肼+利福平+乙胺丁醇6个月

我国水力资源的蕴藏量达6.8亿KW、约占全世界的、居世界第位（）

A.1/51

B.1/61

C.1/42

H-H键的键能是436kJ•mol ^-1，I-I键的键能是151kJ•mol ^-1，H-I键的键能是299kJ•mol ^-1．则对反应H₂（g）+I₂（g） 

2HI（g）的说法，不正确的是（　　）

A．吸热反应

B．放热反应

C．化合反应

D．可逆反应

发行人在主板上市公司首次公开发行股票，应当符合：最近3个会计年度净利润均为正数且累计超过人民币（）万元，净利润以扣除非经常性损益前后较（）者为计算依据。

A．3000，低

B．5000，低

C．3000，高

D．5000，高