读下图所示的黄河河道，出现在 [ ] A．黄河上游 B．黄河中游 C．黄河的下游

已知椭圆9x²+16y²=144，焦点为F₁、F₂，P是椭圆上一点，且∠F₁PF₂=60°，则S△PF1F2=______．

磺脲类药物继发性失效的原因包括()

A．未被识别的成人隐匿性自身免疫性糖尿病(1ADA)

B．磺脲类药物吸收障碍

C．胰岛B细胞功能进行性下降

D．患者饮食控制不佳

E．应激状态

减轻或消除泵汽蚀的方法很多，但不包括（）。

A．降低输送液体温度

B．降低吸入管路阻力

C．降低流量

D．切割叶轮

阅读下列各小题，根据括号内的汉语提示，用句末括号内的英语单词完成句子。

1. Mary ______ (喜爱) travelling and she always keeps a travel journal of what she does each day during

     her trip. (fond)

2. It is requested that every student ______ (求助于) the dictionary while having difficulty in reading. (turn)

3. Anne stayed awake ______ (故意) until half past eleven to have a good look at the moon by herself.

    (purpose)

4. When the earthquake shook my hometown, I ______ (碰巧) away from my home and escaped. (happen)

5. Only then ______ (他意识到) that his stubbornness caused such great damage to the basketball team.

    (realize)

6. Geography also _______ (起作用) in making dialects. (play)

7. He talked about some writers and works ______ (不知道) us all. (unknown)

8. You need to pack your things in the suitcase very quickly, Lucy. We ______ (要去) London. (leave)

9. There are more girls than boys in the school, ______ (其中五分之三是) girls.

10. Elias is a poor black worker ______ (Mandela提供过指导) on the legal problems. (whom)

使用WLAN的电信手机用户，密码是开户时前台设置初始密码，用户使用初始密码登录后再修改密码重新登陆。