向下表的甲溶液中逐滴加入相应的乙溶液至过量，反应过程中溶夜的

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问题选择题

向下表的甲溶液中逐滴加入相应的乙溶液至过量，反应过程中溶夜的pH变化与加入乙的体积关系，能用右下图曲线表示的是

[ ]

A. ①③

B. ①④

C. ①③④

D. ①③④⑤

答案

答案：B

听力题

单词拼写 (共5小题, 每小题1分, 满分5分)

根据句子的意思和括号里的中文提示，写出下列的单词。

61. According to the plan, three ____ (申请人) will hand in their forms after they register.

62. I did what I could to make our guests _____ (舒服的).

63.There are many ____ (目击者) who saw the fighting right on spot.

64. It is ____ (非法的) for anyone to sell or buy marijuana (大麻) in our country.

65. China is a country with a long history of ____ (文明).

选择题

Firefighters were called when a gas tank ________ in the back yard of a home on Beihai Road. [ ]

A．explored

B．exploited

C．exploded

D．exposed