甲公司应收乙公司贷款600万元，经磋商，双方同意按500万元结清该笔贷款。甲公司已经

下列哪一种效应是人们对某个社会群体或某一类人形成的一种固定印象（）。

A.首因效应

B.晕轮效应

C.近因效应

D.类化效应

关于发绀的影响因素描述不正确的是（）

A.红细胞增多

B.还原血红蛋白增加

C.皮肤色素

D.氧化血红蛋白增加

E.心功能状态

介词填空。

1. They help to educate the public about caring _____ the animals.

2. I agree _____ you.

3. It's hard _____ stop riding in cars.

4. I have never heard _____ the woman.

5. She makes model toys _____ old TVs.

6. The walls are made _____ old glass bottles.

7. It's polite to take a few flowers _____ a gift.

8. He was late _____ a business meeting.

某工厂污水排放量为30000m³/d，排入大中型湖泊，则对于一级水环境影响评价，该湖泊布设二个取样位置的范围是( )km²。

A．1～2.5

B．1.5～3.5

C．2～4

D．3～6

Tom and I are going to see the film Finding Nemo this evening because _______ us has seen it yet. [ ]

A. neither of

B. both of

C. all of

D. none of