鲜牛奶的蛋白质平均含量一般为（） A.1% B.2% C.3% D.4% E.5%

What’s the most important thing for you to have in your life? Someboy mentions hard-work, others suggest knowledge, love and luck.

If you arrange the 26 English letters alphabetically(按字母表的顺序)and use numbers to represent each of them, for example, 1 for a, 2 for b, 3 for c…, you can change an English word into a number. So hard-work becomes 8+1+18+4+23+15+18+11="98," meaning 98 is its mark; knowledge: 11+14+15+23+12+5+4+7+5="96," while love :12+15+22+5="54," and luck : 12+21+3+11="47," a small mark. None of these words can give one a full mark. What about money or prayer(祈祷)? They can’t , either.

Then what else? Don’t be worried. You can always find an answer to a problem in your life, when you change your way of looking at things or doing things, or your attitude(态度).Yes, attitude is the word. See for yourself: attitude:1+20+20+9+20+21+4+5=100，a full mark.

Different attitudes lead to different courses of life. Most times people hope for a better life. It is possible that one will have a change for the betterr after one has changed one’s attitude.

When you change your manner and became friendly towards others, you’ll meet more smiling faces towards you.In the same way, if you take a positive(积极地)attitude towards failure(失败),you’ll find it’s also rewarding though it has caused you losses.

小题1:In the writer’s opinion , what is the most important things in a person’s life?

A．Hard-work.

B．Knowledge.

C．Money.

D．Attitude.小题2:According to the passage, if you meet with problems, the best way out is to ___________.

A．ask for helpf from others

B．say your prayers to God

C．change your attitude

D．try maths-solving methods小题3:From the passage we can learn that ______________.

A．diffrent attitudes come from different courses of life.

B．mathematics can solve every problem easily in our daily life

C．failure sometimes can bring you good if you take a positive attitude

D．none of the English words except “attitude” equals to 100 or more

酸在生产生活中领域有广泛应用．请回答下列问题：

（1）胃液中有助于消化的酸是______；

（2）浓硫酸常用作某些气体的干燥剂，主要是利用了浓硫酸的______性；

（3）依据给出的溶解性表，写出一种跟盐酸、稀硫酸都能反应的可溶性盐______；

（4）由①CuO+H₂SO₄=CuSO₄+H₂O，②K₂O+2HNO₃=2 K NO₃+H₂O，③Fe₂O₃+6HCl=2FeCl₃+3H₂O可知，常温下酸与金属氧化物反应的规律是______．

在卫星主站与基站（车）卫星链路对通完成后，卫星主站工程师可以根据基站（车）现场工程师要求将（）与指定编号的（）进行跳接，最终接入核心侧。

A.调制解调器

B.卫星链路

C.DDN

D.地面链路

某地开展健康教育与健康促进活动，下列评价指标中不属于过程评价的是

A．目标人群参与率
B．健康教育覆盖率
C．干预活动的类型
D．健康教育材料的种类
E．卫生知识知晓率

为什么在铝的阳极氧化时必须搅拌电解液？（）

A、降低工件表面温度

B、浓度均匀

C、增加导电