施工劳动力具有以下特点（） A.以使用劳务分包企业劳动力为主 B.以农村劳动力为

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

After that, she asked her students, "What's water?"

     No one spoke 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

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 problem."

1. The students were having their _____class.

    A. English

    B. Chinese

    C. chemistry

    D. maths

2. Miss Li was telling the children what _____ was like.

    A. water

    B. air

    C. earth

    D. weather

3. What is the water like behind the boy's house?

    A. No color

    B. Bad smell

    C. Black

    D. both B and C

4. Most of the children ______ the boy.

    A. agreed with

    B. agreed on

    C. heard from

    D. liked

5. What do you know from the story?

    A. The river is getting more and more.

    B. The river is getting less and less.

    C. The river is getting cleaner and cleaner.

    D. The river is getting dirtier and dirtier.

运行期声源为固定声源时，（）作为环境影响评价时段。

A.固定声源投产运行前

B.固定声源投产运行中

C.固定声源施工后

D.固定声源投产运行后

关于胰腺的淋巴回流，正确的是（）。

A.胰头的淋巴注入胰十二指肠上、下淋巴结

B.胰体的淋巴分别注入胰上淋巴结和胰下淋巴结

C.胰尾的淋巴汇入脾门淋巴结

D.各淋巴结最后注入腹腔淋巴结和肠系膜上淋巴结

E.以上都是

小明同学从S+O₂SO₂中获得以下信息：①该反应反应物是硫和氧气；②反应发生条件是点燃；③反应前后元素种类和原子个数不变；④反应前后分子总数保持不变；⑤参加反应的硫和氧气的质量比为2：1．其中正确的信息是　 [ ]

A．①②④⑤

B．①②③

C．④⑤

D．①②③⑤

从1984年中到1985年中，美国伊诺州进行了一次快速再就业者奖金试验。其目的是为了检验通过向那些能够“快速”找到新工作的保险领取者发放现金奖励的做法，是否能够有效地缩短失业者的失业时间。同时又不至于对失业保险者在失业之后能够获得的工资率产生负面影响。这种试验的想法是，承诺重新就业的失业保险领取者发放一笔现金奖励的方法，可能会减少失业者寻找新工作的时间，从而重快地促成他们找到本人可以接受的新工作在试验中，失业保险领取者被随机地身划分为两组，一组作为控制组，获得正规的失业保险福利，对于第二组做出这样的承诺，如果他们能在失业后的11周内找到一份全日制工作，并最少能在此工作中连续工作4个月，他们可得到500美元奖金。试验结果表明，有机会获得奖励的那个小组的失业保险者在平均失业时问上比控制组缩短了一周左右，而他们在结束失业后的工资率却与控制组中的失业保险领取者没什么差别。

失业保险领取者属于（）。

A．保险人

B．投保人

C．被保险人

D．受益人