内容正文:
四川省成都简阳市
2022-2024年中考英语一诊(期末)试题分类汇编
阅读表达
2024年四川省成都简阳市中考一诊英语试题
四 、阅读表达(共10小题;计10分)
A. 补全短文根据短文内容, 从短文后的A~F 选项中, 选出5个适当的选项补全短文。 (
共5小题;每小题1分, 计5分)
DNA is the genetic(遗传的)material found in all living things. It's unique(独一无二的), so it's usually used to identify(确认)people or animals. 1___________ Police can take a very small piece of DNA and find out who it is from. Now, a new study shows that criminals could soon be caught, using the DNA from cat's hair if they are cat owners. Using cat DNA, scientists can now look into one piece of cat hair and identify the cat.
2 ____________ It's because the hair doesn't have hair roots (发根), it has little DNA. Also, cats’ DNA is very similar. One piece of cat hair can seem like the hair of thousands of different cats.
3______________ . They found a special piece of DNA from the cat's hair. It has some parts that make a cat unique. 4_____________. So the scientists copy the DNA piece and make billions of copies. This way, they have a lot more pieces to look at. It's now much easier for them to identify a cat just by its hair.
In their study, the scientists said they can also use the same way to identify other pets based on their hair, such as dogs. So it will be easier for the police to catch criminals. 5_________ Although the “bad guys” try not to leave their DNA behind, it's difficult for them to clear away all the pet hairs, such as those on their clothes.
A. There is usually pet hair at crime scenes.
B. In the past, scientists couldn't do that.
C. They find DNA in cats' hair and make copies of it.
D. Scientist from the University of Leicester, UK, found a new way.
E. However, it's difficult to see the most unique parts because they are too small.
F. DNA can be found in blood, hair, skin(皮肤)and many other parts of the body.
B. 完成图表 阅读下面短文, 根据其内容, 完成图表中所缺的信息。 ( 共5小题;每小题1分, 计5分)
Have you ever tried to hide your emotions (情 感 )from someone during a conversation? It's not always easy, as the color of your face might tell