问题 选择题

下面说法不正确的是[ ]

A.三角形的面积一定,底和高成反比例

B.长方形的周长一定,长和宽不成比例

C.订阅《少年报》的份数和总钱数成正比例 

D.因为圆周长C= πd,所以π与d成反比例

答案

答案:D

解:A、三角形的底×高=面积(一定),是乘积一定,成反比例,此句正确;

B、长方形的长+宽=周长(一定),是和一定,不是乘积或比值一定,不成比例,此句正确;C、订《少年报》的总价÷份数=单价(一定),是比值一定,成正比例,此句正确;D、圆周长C=πd,但π是定量,不随着d的变化而变化,所有π与d不成比例,原句错误;故选:D.

阅读理解

阅读理解。

     He wishes the holiday season would end already. His back aches, his red suit feels like a spacesuit, his

cheeks have gone tight from smiling for 12 hours-and still the kids keep coming and coming, like ants at a

picnic. As Christmas becomes more commercialized (商业化) across the U. S. And Canada, so must Santas.

As the holiday begins earlier each year, so must its spokesmen.

     The questions from children these days are harder than ever. Now, with thousands of children expecting

a father or mother serving in Iraq or Afghanistan, the questions are as heart-breaking as they are unanswerable. For example, "Can you please bring Daddy home from the war in time for Christmas morning?"

     Santas also have a pretty good chance of getting sued (指控). A professional Santa Claus in Canada told a

story: A Santa had a girl on his knee, and he commented, "You have nice eyes and nice hair." The girl later

said it was sexual harassment (骚扰). When a Santa feels anxious, he often shows it in the same ways ordinary people do: The Santas were always seen to hang around at the dinner table when the show ended. Many of them just sleep in bed for several days and don't see other children again.

1. In the first paragraph, "spokesmen" refers to _____.

A. businessmen

B. political leaders

C. organisers of the activities

D. Santa Clauses

2. The passage implies that the job of Santa Claus is _____.

A. well-paid

B. very hard

C. worth doing

D. dangerous

3. According to the third paragraph, Santas may sometimes be blamed for _____.

A. doing something against the law

B. hanging around the dinner table

C. being lazy and sleeping in bed for days

D. not playing their roles as expected

4. What would be the best title for the passage? 

A. Christmas: Not a Good Festival for Santas

B. Is Santa Claus Really Alive?

C. A Christmas Story

D. What Does Santa Claus Do for Children?

名词解释