题型:阅读选择 题类:常考题 难易度:困难
浙江省台州市书生中学2019届九年级下学期英语第一次月考试卷
What was discovered by accident? The answer is penicillin (青霉素). It kills germs. By killing germs, it saves lives. Suppose you are sick. You go to a doctor. She examines you. She says you have a “staph” infection (葡萄球菌感染). She gives you some medicine. You take it. The medicine knocks out the staph. Soon you are well. Before penicillin, this would not happen. Staph was almost sure death.
Everyone wanted a medicine. Laboratories worked day and night. They grew the staph in small dishes. Then they tried to kill it. Nothing worked.
The laboratory dishes had covers on them. They kept things from falling into dishes. Molds (霉菌) were a big worry. They are always in the air. You can't see them. They're too small. There are thousands of different molds. Molds can make an experiment (实验) fail. That's why dishes are covered.
Dr. Alexander Fleming was working to kill the staph germ. He worked for years. One day he took a cover off a dish. He looked inside. There was a thick growth of staph germ. There was also some mold. Then he saw something strange. Where the mold was, there was no growth of staph. This is what Fleming probably thought. “By accident, I found a mold to kill the dreaded staph.”
This is how penicillin was found. But here's the real miracle (奇迹). There are thousands of kinds of molds. But only one kind can kill staph. The mold must have fallen into the dish a few days before. The cover was probably off only a few seconds (秒). In those few seconds the right mold fell into the right dish. Another man might have thrown the dish away. But Fleming was very careful and smart. He understood what the mold did. How lucky the humans were!
The International Day of Families
Date | On May 15 every year. |
Beginning | It was set by the UN in 1993. |
Purposes | ·To know the importance of family. ·To realize the family problems and work together for a better world. |
Ways of celebration | ·Staying with your family. ·Reflecting on the meaning of family to you. ·Building a good relationship with other families. |
Taking Care of Your Eyes
Eyes are important to you, and good eyes help you see the world clearly. But it's very common to see many people wearing glasses these days. You must want to know how to take good care of your eyes. Here are some questions for you to think over.
{#blank#}1{#/blank#} When you stare at computers or phones for a long time, your eyes often feel tired. So, try to spend less time on screens and enjoy more time with your friends and family.
Do you give your eyes lots of rest? When you are watching TV or playing online games, remember to take breaks. After 20 minutes of work on the screen, look at something 20 feet away for at least 20 seconds. It's really useful. {#blank#}2{#/blank#} When you have enough sleep, your eyes can get ready for the work of the new day.
How many hours should you spend on outdoor activities? {#blank#}3{#/blank#} The natural light and the real beauty help your eyes stay healthy.
Do you like to eat fruit and vegetables? {#blank#}4{#/blank#} Your eyes need them. They help your eyes get the things they need to work at their best.
A. How much time do you spend on screens? B. And don't forget to get enough sleep at night. C.Foods like carrots and blueberries are healthy. D. You can close your eyes or look at something far away for some time. E. Doctors say that being outdoors at least two hours a day is good for your eyes. |
How do you protect your eyes? (no more than 10 words){#blank#}5{#/blank#}
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