曲轴轴颈及曲拐轴颈在同一根曲轴上应当有同一的尺寸，各轴颈直径间的差别不大于（）毫米。

根据短文内容，回答问题。

     The students were having their chemistry class. Miss Li was telling the children what water was like. After

that, she asked her students, "What is water?" No one answered for a few minutes. Miss Li asked again, "Why

don't you answer my question? Didn't I tell you what water is like?" 

     Just then, a boy put up his hand and said, "Miss Li, you told us that water has no color and no smell. But

where to find such kind of water? The water in the river behind my house is always black and it has a bad

smell." Most of the children agreed with him. 

     "I'm sorry, children," said the teacher, "our water is getting dirtier and dirtier. That's a serious problem."

1. Why didn't the children answer the teacher's question at first?

   ________________________________________________

2. Please use a sentence to describe what water is.

   ________________________________________________

3. Why does the water in the river have color and smell?

   ________________________________________________

4. Do you think the boy who answered the teacher's question is stupid?

   ________________________________________________

5. What did other students think of the boy?

   ________________________________________________

Eighth-grader Victoria Bills is talking about money with her classmates. She is worried that a company’s stock (股票) price could fall. It may be an unusual topic of conversation for a 13-year-old. But at Bills’ school in Chicago, US, you hear it all the time.

The Chicago school’s 420 students learn about economic(经济学). They also get a chance to make money. Each 1^st grade and 5^th grade, students learn the basics of economics and investing(投资).

Then in 6^th grade, they put what they’ve learned to work. Students join a junior group that manages the $20,000. The group, made up of 12 to 14 students, decides which stocks to buy.

After graduating, students pass on $20,000 to the next 1^st grade class. They keep half of the rest of the money; the other half goes toward improving the school. They can choose to put their money in a college-savings program or take the cash.

In 2007, Bills suggested that her class buy the stock of the Apple computer company. This was just before the iPhone came out. “We bought stock just at the right time,” she says. The kids bought Google stock as it reached $400 a share. It is now worth over $500. “It was a good buy,” says Myles Gate, 13. He hopes to be a banker one day.

The school’s two graduating classes of 2005 and 2006 have each earned about $10,000 in profits(利润).

小题1: At Bills’ school, students can’t       .

A．learn the basics of economics

B．learn how to invest money

C．get a chance to make money

D．share all the money they make小题2: Who manages the $20,000 in the class?

A．The teachers.

B．The school.

C．The students.

D．The parents.小题3:Google stock the kids bought has reached more than ______ at present.

A．$500

B．$400

C．$10,000

D．$20,000小题4:According to Paragraph 5, we know that       .

A．Bills’ class bought the Apple stock after the iphone came out

B．it was a mistake for the class to buy Google stock

C．the students get some investing experience in the school

D．the class bought the two kinds of stocks at the same time小题5: What’s the passage mainly about?

A．How students make money in the US.

B．Students learn economics and investing at school.

C．Myles Gage hopes to be a banker one day.

D．What US students hope to do after graduation.

为培养和强化学生控制和表达情绪的能力。社会工作者可做的工作包括协助学生（）。

A.辨识自己和他人的情绪

B.拒绝接纳自己的负面情绪

C.提高对他人负面情绪的同感能力

D.学会运用不同的词语和方法表达自己的感受

E.理解个人内在情绪和外在表达的差异性

被法律授权实施卫生行政强制措施主体的组织必须符合下列条件（）：具有熟悉法律、法规、规章和业务的工作人员；不得从事经营活动或者有偿服务。

A.街道办事处

B.依法成立的社团组织

C.依法成立的企业法人

D.依法成立的具有管理公共事务职能的组织

（）是胃癌根治的前提，也是当前我国防治胃癌的关键

A.胃癌的放疗

B.胃癌的化疗

C.胃癌的手术治疗

D.胃癌的早期诊断