问题 填空题

______能使细胞内的一些有机物,经过复杂的变化,将其中储存的化学能释放出来,供细胞生命活动利用.

答案

线粒体能将细胞中的一些有机物当燃料,使这些与氧结合,经过复杂的过程,转变为二氧化碳和水,同时将有机物中的化学能释放出来,供细胞利用,此过程称作呼吸作用.呼吸作用的表达式可以这样表示:有机物+氧→二氧化碳+水+能量.

故答案为:线粒体

阅读理解

根据短文内容,判断句子正误,正确的写“T”,错误的写“F” 。

     Last Friday after I got my pay, I went shopping on my way home. In the crowded supermarket, I lost

my purse and my money was gone with it. I felt very angry and sad. We were not rich and the money was

important for us. How could I tell my wife about it?

     I felt really sorry for losing the money. When I got home, I cleaned the house and prepared a nice meal.

I hoped what I did could comfort (安慰) my wife. When she came back, she was surprised to see the clean

house and the nice meal. Then I began to tell my story when we were at table, but my wife didn't respond

(反映) as if she had not heard my words. Maybe she was trying hard to hide her anger, I thought.

    "I've lost my pay." I said to her again.

    "I see." She didn't seem to be angry with me. For a moment, she said nothing but enjoyed the meal with

me.     

    "I've lost my money," I could not help asking, "why don't you blame (责备) me?" 

    "Oh, my dear," she raised her eyes, looked at me and said, "I'm thinking about how to comfort you. It's

the thief who is to be blamed!"

( )1. I got my pay last Monday.                          

( )2. In the supermarket I lost my purse and money.      

( )3. I cleaned the house because I liked doing it.      

( )4. My wife was surprised to see what I did.           

( )5. When my wife heard my  story, she became very angry.

多项选择题