问题 单项选择题

下图是河流生态系统受到生活污水污染后的净化过程示意图,据图分析得出以下结果,其中错误的是()

 

A.污水中含有大量富含N、P元素的有机物

B.在A到B段水域,细菌的迅速增加是溶氧量减少的主要原因

C.在B到C段水域,因为溶氧量的增加导致藻类的数量增加

D.在C到D段水域,水体的污染情况已经大大减轻

答案

参考答案:C

阅读理解

阅读理解。

      One of my fondest memories as a child is going by the river and sitting idly on the bank. There I would

enjoy the peace and quiet, watch the water rush downstream and listen to the chirps of birds and the rustling

of leaves in the trees. I would also watch the bamboo (竹子) trees bend under pressure from the wind and

watch them return gracefully to their upright or original position after the wind had died down.

     When I think about the bamboo tree's ability to bounce back or return to its original position, the word

resilience (恢复力) comes to mind. When used in reference to a person, this word means the ability to readily

recover from shock, depression or any other situation that stretches the limits of a person's emotions.

     Have you ever felt like you are about to snap (突然折断)? Have you ever felt like you are at your breaking

point? Thankfully, you have survived the experience to live to talk about it.   

     During the experience you probably felt a mix of emotions that threatened your health. You felt emotionally

drained, mentally exhausted and you most likely endured (忍耐) unpleasant physical symptoms (症状).   

     Life is a mixture of good times and bad times, happy moments and unhappy moments. The next time you

are experiencing one of those bad times or unhappy moments that take you close to your breaking point, bend,

but don't break. Try your best not to let the situation get the best of you.   

     If the going gets tough and you are at your breaking point, show resilience. Like the bamboo tree, bend, but

don't break!

1. When the writer talks about the bamboo trees, he wants to tell us _____.

A. he can't forget those bamboo trees

B. he used to watch them bend under pressure and return to their upright position

C. he still remembers the good days as a child

D. he admires the character of the bamboo trees

2. Which of the following is TRUE?

A. When you have overcome some depression, you show resilience.

B. When you are about to snap, we say you are resilient.

C. If you feel like you are at your breaking point, you are fortunate.

D. If you feel mentally exhausted, you are likely to experience pleasant physical symptoms.

3. What does the writer mean by saying"Try your best not to let the situation get the best of you?"

A. You should make the best of the situation.

B. You should try your best to get the best situation.

C. You should try your best not to be defeated by the situation.

D. You should try your best not to give up the best situation.

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

A. My fondest memories

B. Good times and bad times

C. Enjoy the peace and quiet

D. Bend, but don't break

多项选择题