题干

下列关于植物光合作用和细胞呼吸的叙述,正确的是(  )

A:无氧和零下低温环境有利于水果的保鲜

B:CO2的固定过程发生在叶绿体中,C6H12O6分解成CO2的过程发生在线粒体中

C:光合作用过程中光能转变为化学能,细胞呼吸过程中稳定的化学能转变为ATP中活跃的化学能

D:夏季连续阴天,大棚中白天适当增加光照,夜晚适当降低温度,可提高作物产量

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D

同类题1

阅读理解

B

    In choosing a friend, one should be very careful. A good friend can help you study. You can have fun together and make each other happy. Sometimes you will meet fair-weather friends. They will be with you only if you have money or luck, but when you are down, they will run away. How do I know when I have found a good friend? I look for certain qualities of characteristic, especially understanding, honesty and reliability (可靠).

    Above all else, I look for understanding in a friend. A good friend tries to understand how another person is feeling. He is not quick to give his opinion. Instead, he tries to learn from others. He puts himself in the other person's place, and he tries to think of ways to be helpful. He is also a good listener.

    At the same time, however, a good friend is honest. He does not look for faults (过错) in others. He notices their good points. In short, a friend will try to understand me and accept me.

    Another quality of a friend is reliability. I can always depend on (信赖) a good friend. If he tells me he will meet me somewhere at a certain time, I can be sure that he will be there. If I need help, he will do his best to help me. If I am in trouble, he will not run away from me.

    There is a fourth quality that makes a friend special. A special friend is someone with whom we can have fun. We should enjoy our lives, and we would enjoy our friendship. That is why I especially like friends who are fun to be with. A good friend likes the same things I like. We share experience (经验) and learn from each other. A good friend has a good sense of humour, too. He likes to laugh with me. That is how we share in the joy of being friends. And I know that he is looking for the same quality in me.

    When I meet someone who is reliable, honest, and understanding, I know I've found a friend!

同类题4


-------I bet someone stole my backpack .                          
-------Well , you ______ have kept an eye on it .