试题与答案

造成生态系统中的能量递减的原因是[ ] A.生物体的呼吸作用 B.生物体各项生命

题型:选择题

题目:

造成生态系统中的能量递减的原因是[ ]

A.生物体的呼吸作用

B.生物体各项生命活动的消耗

C.生物体排出废物等带走一定能量

D.以上都是

答案:

答案:D

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题型:阅读理解

先阅读,再判断。(对的写“T”,错的写“F”。)

Dear Grandpa,

    Thank you for the new jeans. They are cool! It's cool in Beijing. I can wear my jeans and T-shirt.  

I have a new jacket. My old jacket is too small. I want to buy a pair of sneakers. They are fifty yuan.

They are too expensive. What's the weather like at the farm? Is it warm?

                                                                                                                                             Love,

                                                                                                                                             John

(      )1. It is warm in Beijing.

(      )2. John has a new jacket.

(      )3. Grandpa is at the farm.

(      )4. The sneakers are thirty yuan.

(      )5. The sneakers are too expensive.

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