下列物质敞口露置于空气中，质量不变的是： A．氢氧化钠 B．浓硫酸 C．氯化钠

阅读短文，选择正确答案。

     Be as Good as Your Words Japanese Prime Minister (首相) Junichiro Koizumi on April 22 apologized (道歉)

for his country's past in the wars. 

     "In the past, Japan did great damage (破坏) and brought suffering to the people of many countries, especially

those in Asia," he said.

     He was talking to 100 Asian and African leaders at a meeting in Jakarta, Indonesia.

     China and Japan are having a hard time these days. China is angry at Japan because Japan doesn't face its

past.

     For example, Japan started the war with Chian in the 1930s and 1940s. But one of its new history textbooks

says China started the war!

     Chinese Chairman Hu Jintao met Koizumi on April 23. Hu said China wanted to be friends with Japan. But he

 also told Koizumi that Japan needed to use history as a mirror (镜子) and face the past.

     China and Japan are both important countries in the world .The two leaders agree a good friendship will be

good for both countries.

     The two countries sell a lot of goods to each other .Last year ,China overtook the US to become the biggest

trading partner (贸易伙伴) with Japan.

     Koizumi's apology is a good start. Now, it's important for Japan to match its words with action.

                                                                                        From the 21st Century 4-28-2005

1. What does the underlined word "suffering" mean? [ ]

A. Anger

B. Pain

C. Money

D. Change

2. China is angry at Japan because Japan _______. [ ]

A. is a developed country

B. started many wars

C. is not a good trading partner

D. doesn't face its past

3. From the news, we can know that _______. [ ]

A. Japan never keeps its word

B. China will get on well with Japan if Japan can keep its word

C. China doesn't care about its relationship with Japan

D. China and Japan will not get along well in the future

下列为缓释包衣材料的是（）

A.乙基纤维素

B.甲基丙烯酸共聚物

C.聚乙烯醇酞酸脂

D.羟乙基纤维素

E.甲基纤维素

人力资本具有（）性质。

A.价值性

B.稀缺性

C.生产性

D.可变性

科技文件材料的更改属科技文件材料形成范畴，是按（）进行的。

A、管理制度

B、归档制度

C、借阅制度

D、更改制度