阅读理解。
Our local Community (社区) Youth Club is a very popular organization with young people in my town.
I have been a member for four years now and I've taken part in a lot of interesting projects. These include
fun activities such as holiday camps and discos. We have even made a video.
But it isn't all just enjoyment. We have also started doing social work to help people in our neighbourhood.
We have organized activities for small children during the holidays. We have also formed a special support
group to help young people stop smoking.
We are particularly proud of the most recent group we have created. It organizes regular visits to the local
home for the elderly. This idea came from a school visit to a home for the elderly. My class spent an afternoon
at the home and everyone found the visit very rewarding (有意义的). The old people at the home were excited
by our visit. They were very talkative (健谈的) and they told us their personal stories. During our visit, the
home was full of the sound of laughter. We sang songs and played games with the old people and had tea
together. But we realized that life wasn't always easy. Some of them were in poor health and were very
unhappy. They couldn't go outside and the visits by children brought some sunshine into their lives.
Many young people like me have very little contact with elderly people. As a result, we have a lot of wrong
ideas about them. We have little or no idea of the kind of lives they lead in the homes. After this visit, my
friends and I decided we should do something to help improve the quality of their lives.
Since the creation of our visiting group over twenty volunteers have joined us. Up to now, we have
organized three group evening parties and a concert. But I think the individual (单独的) visits are the most
important. Club members regularly visit old people and everyone finds the experience rich and rewarding.
1. Is the writer a member of the Youth Club?
_____________________________________________________.
2. How did the old people feel by the children's visit?
_____________________________________________________.
3. Why do young people have wrong ideas about the elderly?
_____________________________________________________.
4. What did the writer and his friends decide to do after the visit to the home for the elderly?
_____________________________________________________.
5. Put the sentence "They couldn't go outside and the visits by children brought some
sunshine into their lives." into Chinese.
_____________________________________________________.
到达波峰，所以
，解得
，，所以
,A=0.2m，该时刻位移为零，所以有
x=0.2sin(0.5πt) m