变量数列

化学与能源开发、环境保护、资源利用及日常生活等密切相关，下列说法正确的是

A．无论是风力发电还是潮汐发电，都是将化学能转化为电能

B．凡含有食品添加剂的食物对人体健康均有害，不宜食用

C．乙醇和汽油都是可再生能源，应大力推广使用乙醇汽油

D．推广燃煤脱硫技术，可以降低SO₂对环境的污染

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

某校开展了以“纪念新中国成立62周年”为主题的读书活动。开展这项活动，有利于激发学生的爱国热情，增强其历史使命感和责任感，有利于引导学生把握人生道理、实践人生追求。这是因为[ ]

①文化能促进社会的全面发展　

②文化对人具有潜移默化的影响　

③有文化知识才会有崇高的道德　

④文化作为精神力量能转化为物质力量

A．①②

B．②④

C．①③

D．③④

红军长征后，谁领导的八省游击战争，历时几年在长江南北与敌人进行了艰苦卓绝的斗争，保存了革命火种。

新鲜血液中含有X因子，其作用是（）

A.合成过氧化氢酶、细胞色素氧化酶的辅基

B.脱氢酶的辅基

C.能破坏红细胞膜上的不耐热物质

D.能直接破坏白细胞膜

E.能分解尿素