问题 填空题

汶川大地震,给人们造成了几十年不遇的特大灾害。地震时产生的        (选填“超声波”、“次声波”或“紫外线”)对建筑物、人的器官功能的破坏性很大,并且它的频率    20Hz(选填“高于”、“等于”或“低于”),人耳却无法直接听到,所以要尽量远离地震源。

答案

次声波;低于

题目分析:地震、台风、海啸、火山喷发等自然灾害都伴随着次声波的产生;次声波是频率低于20Hz的声波。

阅读理解

Have you ever had an embarrassing (尴尬的) experience? Last week we asked readers to tell us about embarrassing experiences. We received thousands of letters! Here is a selection.

Tony: My most embarrassing experience happened when I had just left university. I had just started teaching in a Liverpool secondary school. One morning my alarm clock didn’t ring. I woke up at half past eight and school began at nine. I quickly washed, dressed, jumped into my car and rushed to school. When I arrived, the students had already gone into class. I didn’t go to the office, but went straight into class. After two or three minutes the students began laughing, and I couldn’t understand why! Suddenly I looked down and understood. I had put on one black shoe and one brown shoe!

Henry: The most embarrassing experience I’ve ever had happened two years ago. After seeing a film, my wife and I had lunch in our favorite restaurant in town. Then we decided to take a walk along the street. The street was very busy and we started holding hands. Suddenly my wife saw a dress in a shop window and stopped. I started looking at some watches in the next window. After a minute or two I reached for my wife’s hand. There was a loud scream, and a woman slapped (拍击) my face. I hadn’t taken my wife’s hand!I'd taken the hand of a stranger!

小题1:The students began laughing when they saw Tony _________.

A.wearing a wrong shoe

B.carrying an alarm clock

C.looking down suddenly

D.rushing into the classroom小题2:Henry and his wife held hands _________.

A.at the cinema

B.in the shop

C.at the restaurant

D.along the street小题3:Henry was embarrassed because he __________.

A.heard his wife screaming

B.knocked over some watches

C.took the hand of a stranger

D.slapped the woman in the face

单项选择题 A1型题