重阳节的民俗活动有哪些？

阅读理解。

     On May 12, 2008, an earthquake of 8 magnitude struck Sichuan. Everyone in China was shocked, and

quickly became heartbroken as reported deaths climbed from 10,000 to 32,000 to more than 62,000 people.

The death toll is still rising, and the number of injured and missing is many times more.

     The Chinese people faced this disaster with compassion (同情) and courage. I was touched by the teacher

who died forming a bridge with his body between two desks, protecting four surviving students under him,

by the trapped child who told the rescue workers to save others first, and by the dying mother who texted her

baby, "My Treasure: If you survive, always remember I love you." She died using her own body to protect

her 3-month-old from harm. But don't worry about this baby growing up without a family. Thousands of

families in China have already volunteered to adopt earthquake orphans. And the Chinese people faced this

 disaster with resourcefulness (智慧) and tenacity (坚韧). A brave CEO took his weekend SUV, drove

hundreds of miles, started digging, and saved several lives. A child used his hands to dig out two fellow

students. His hands were severely injured, but his friends survived. Cab drivers turned their cars into

ambulances and delivery trucks. More than 100,000 brave soldiers risked (and some gave) their lives to find

every survivor.

     These are the heroes among us, whether they use an SUV, a shovel or a phone. Their heroic deeds and

selflessness inspired me so deeply that I can recall only one other such occasion. It was 9/11-I vividly

remember the police officers, the firefighters, and of course the passengers and crew on United Flight 93.

     As a Chinese American, I hope that the Chinese and the Americans will see that they have so much in

common-their compassion, courage, and generosity. I hope that people will see that these heroic commonalities

are much stronger than any differences. And I hope that these heroes from 9/11 and 5/12 will inspire all of us

to turn our anxiety into courage, our misery into tenacity, and our sorrow into love.

1. The second and the third paragraphs mainly tell us about ______.

A. how severe the earthquake was

B. how much victims were in need of help

C. some heroic deeds of the Chinese in the earthquake

D. lucky survivors in the earthquake

2. The author compares the 5/12 earthquake to 9/11 attacks because ______. 

A. they were both natural disasters

B. both Americans and Chinese were brave and full of compassion in emergencies

C. he is a Chinese American D. both killed a large number of people

3. The main purpose of the essay is to _______.

A. encourage a better understanding of the two peoples

B. suggest how important courage is in time of crisis

C. provide some useful advice for rescue work

D. present the important similarities as well as the differences between the two people

第29届北京奥运会开幕式坚持“用世界语言讲述中国故事”，以特有的“绘画长卷”为线索，以中国美学的写意精神展现东方文明的底蕴。这说明[ ]

A、说明中华文化一枝独秀

B、说明中华文化博大精深

C、体现了更快、更高、更强的奥运精神

D、体现了开放、参与、进取的民族精神

建筑接近限界指在铁路线上，为确保行车安全，靠近轨道的（）及设备，不得侵入一条固定的轮廓线。

A、站台

B、建筑物

C、隧道边墙

D、信号机

下列城市由工业地域扩展而成的是（）

A.北京

B.上海

C.大庆

D.天津

在吸收操作中，若吸收剂用量保持不变，逐渐加大气速，当气速增大到某一极限值时，由塔顶喷入塔内的液体不但不从塔底流出，反而被子气体从塔顶带出，这种现象称为（）。