试题与答案

进一步应首选哪种检查以确诊A.B超 B.CT C.上消化道造影 D.气管镜 E.EC

题型:单项选择题

题目:

进一步应首选哪种检查以确诊

A.B超

B.CT

C.上消化道造影

D.气管镜

E.ECG

答案:

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下面是错误答案,用来干扰机器的。

(1)2.5;向左(2)暗条纹,变窄本题考查的是共振曲线的理解和波的干涉现象问题。有图像可知,固有频率,所以,摆长增大,则周期增大,频率减小,共振曲线最大值向左移动;第二问,根据出现明暗条纹的条件可以判...

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题型:阅读理解

阅读理解。

     It was a winter morning, just a couple of weeks before Christmas 2005. While most people were warming

up their cars, Trevor, my husband, had to get up early to ride his bike four kilometers away from home to work.

On arrival, he parked his bike outside the back door as he usually does. After putting in 10 hours of labor, he

returned to find his bike gone.

     The bike, a black Kona 18 speed, was our only transport. Trevor used it to get to work, putting in 60-hour

weeks to support his young family. And the bike was also used to get groceries (食品杂货), saving us from

having to walk long distances from where we live.

     I was so sad that someone would steal our bike that I wrote to the newspaper and told them our story.

Shortly after that, several people in our area offered to help. One wonderful stranger even bought a bike, then

called my husband to pick it up. Once again my husband had a way to get to and from his job. It really is an

honor that a complete stranger would go out of their way for someone they have never met before.

     People say that a smile can be passed from one person to another, but acts of kindness from strangers are

even more so. This experience has had a spreading effect in our lives because it strengthened our faith in

humanity (人性) as a whole. And it has influenced (影响) us to be more mindful of ways we, too, can share

with others. No matter how big or how small, an act of kindness shows that someone cares. And the results

can be everlasting.

1. Why was the bike so important to the couple?

A. The man's job was bike racing.

B. It was their only possession.

C. It was a nice Kona 18 speed.

D. They used it for work and daily life.

2. We can infer from the text that _____.

A. the couple worked 60 hours a week

B. people were busy before Christmas

C. the stranger brought over the bike

D. life was hard for the young family

3. How did people get to know the couple's problem?

A. From radio broadcasts.

B. From a newspaper.

C. From TV news.

D. From a stranger.

4. What do the couple learn from their experience?

A. Strangers are usually of little help.

B. One should take care of their bike.

C. News reports make people famous.

D. An act of kindness can mean a lot.

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