问题 单项选择题

人们常用能量金字塔来说明生态系统中哪两者之间的关系()

A.能量与营养级

B.能量与个体大小

C.能量与个体数量

D.能量与生物代谢类型

答案

参考答案:A

解析:

以生态系统中营养级的能量大小绘制成能量金字塔,与个体大小、生物代谢类型和个体数量无关,故本题选A,BCD不符合题意。

考点:能量金字塔

点评:本题考查了学生的识记理解能力,难度适中,解题的关键是明确能量金字塔的含义。

阅读理解

阅读理解。

Alice:  Hi, Jerry, I heard you have fun with Peggy in Merry Park yesterday.

Jerry: Yes. We had a great time there. Why didn't you come with us? We got there by bus in

         only ten minutes.

Alice: I know, but the ticket is more expensive on the weekend. Also, I've been there many times

        since it opened five years ago. Did you try the Dandelion Seat there? It's so popular that people 

        have to wait for over an hour to get a ride.

Jerry: You mean those flower-like umbrellas that fly high in the sky?

Alice: Yes. I enjoyed riding on the Dandelion Seat and looking over the city. It was a great experience.

Jerry: Eh… I liked taking the train to get around the park better. I don't think it's fun to ride in the air.

         I'd feel like I could fall down any time.

Alice: Maybe you would like it more at night. It's wonderful to see the beautiful lights below your feet.

Jerry: Well… I'm afraid of high places.

Alice: Oh, I see. That's too bad.

1. What can we learn about Merry Park?

A.  It is newly opened.

B.  It is also open at night.

C.  It is across from Jerry's house.

D.  It has the same ticket price every day.

2. What may the Dandelion Seat look like?

        A                    B                   C                  D

3. Which is NOT true?

A. Alice went to Merry Park before.

B. Jerry enjoyed going around Merry Park by train.

C. Jerry would like to try the Dandelion Seat next time.

D. Jerry and Peggy went to Merry Park on the weekend.

单项选择题