题型：阅读表达 题类：常考题 难易度：困难
北京市大兴区2016年九年级上学期英语期末考试试卷
On June 26th, 2000, two scientists, called Francis Collins and Craig Venter, told the world that they could now read the whole “map” of the human body: DNA. DNA is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our mother and father, because we get some of their DNA to make our own. Now we can read some of this “map”, and so we can find out more about how our bodies work.
People have been trying to understand the human body for a long time. In 1860, Gregory Mendel discovered that there is a special reason why we look the same as other people in our family. It is because of small things called “genes” that we have in our body. In 1953, James Watson and Francis Crick made another discovery and found out that those small parts are really messages written in the DNA with a special language.
In 1961, Marshall Nirenberg and Johann Matthaei found the first “word” that they could understand in that language, showing how DNA tells the cell to build its parts. This meant that one day we would be able to read all the messages that a human body gets from its parents' bodies. Scientists have now found all the words in DNA map, but we still do not understand what they all do. By understanding what just one “word” means, we can help save people from several diseases. So the more we understand, the more doctors will be able to do.
Most people hope that this will help to make better medicine and help people who are very ill. Other people worry about that when we learn more words and find out lots of other information, we still use it in the wrong way, just to make people more attractive, or stop sick people getting jobs.
A group of high school students from the United States has planted hope by cleaning up an empty lot(一块地) in their neighborhood.
The students are from Buchtel High School in Akron, Ohio. The empty lot, which is owned by a 1ocal bank, was filled with grass and poison ivy(毒葛). As a project for the school's biohealth(生物健康) class, eight students decided to turn the empty lot into a space that will improve the mental(心里的) and emotional(情感的) health of people who live near it.
They first came up with a design, did research and created 3D models of their plans. Ideas were then presented and the school leaders picked the winning plans. Finally, the students brought those plans to life.
Now when you walk into the lot, you can see a wood walkway leading to a purple iron bench. A few beautiful plants are already in the ground. There is also a hopscotch(跳房子游戏) board that is painted bright blue. A wall painting with the words "Love" and "Peace" has taken shape on a back fence, decorated with the students' handprints. The rest of the fence was painted grey to cover plain wood.
The students said they painted the bench purple because they found that purple has a comforting feeling for people. They thought kids could go there and sit together, communicate with each other in peace and stay out of trouble.
As for the hopscotch board, it was set up for a group of eight to ten school-age kids who lived in the neighborhood but had nowhere to play.
It gives the neighborhood a little hope and a little beauty, "said Lyle Jenkins, a member of the Neighborhood Network." A lot of people love the neighborhood and have great hopes for things getting better.
Lots of love and hope planted by students | |
Introduction | A group of American high school students did a project to plant hope by cleaning up an empty lot, and its {#blank#}1{#/blank#}is a local bank. |
The process (过程) | Eight students made their {#blank#}2{#/blank#}to turn the lot into a space to improve people's health. They did a lot to {#blank#}3{#/blank#}their plans to life |
{#blank#}4{#/blank#}they have made | A wood walkway leads to a purple iron bench. A hopscotch board is painted bright blue. A wall painting has taken shape on a back fence. The rest of the fence was painted grey. |
Reasons for their changes | Purple can create a comfortable feeling for people. The hopscotch board helps kids get along with each other {#blank#}5{#/blank#}. A little hope and a little beauty make people live a hopeful life. |
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