我弟弟在家里总是会被告诫别花太多的时间玩手机。(spend)
My brother ___________________________________________________mobile phones at home.
好英语老师通常会教给学生们学习英语的方法。 (teach)
A Good English teacher usually _____________________________________________.
—__________________________________________(到达学校要花你多长时间)？
—About 15 minutes.(get)
______________________________(那个留着短发的那个女孩) is my sister.(with)
Never try to work when you are very hungry. If you decide to do your homework right after school, you’d better get something to eat before getting to work. 1..Don’t wait until very late in the evening or your work will seem much harder than it really is.
If you have more than one hour’s work, give yourself a break after an hour. But don’t break up so much that you can’t get anything done. 2. .
Don’t put it off(推迟) until the last minute. If you put off doing your homework, you won’t enjoy your free time so much. If you put it off until the end of the week or until right before a test, you will have too much to do. 3..And you can keep up with what is happening each day in school. 4. .
Do your home work at the same time every evening.5.. It will be easier to do your homework and it will make your free time more enjoyable, too.
A.This will help you make it a habit
B.Always do your homework before you get too tired
C.You should work at least half an hour at a time without stopping
D.You should do a little bit each time
E.Then you won’t be afraid of tests and you will succeed
F.You should do it at once
(2018·山东临沂)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!
根据短文内容，选择最佳答案
1.During the experiments to find a medicine for staph infections, ________.
A. the dishes were not covered
B. staph and mold were put together
C. mold was kept in small dishes
D. staph was grown in small dishes
2.The word “ dreaded” means “_______”.
A. famous B. scary
C. health D. endangered
3.The last paragraph suggests that _______.
A. accidents happen to everyone
B. the careful person does not have accidents
C. the careless person will miss valuable chances
D. luck is enough when doing scientific experiments
4.Most of this passage is written by ______.
A. telling an unusual story B. showing the results of experiments
C. offering some reasons D. giving some advice
5.This passage is mainly about ______.
A. medicine for a staph infection B. useful accidents
C. Dr. Fleming’s research D. discovering penicillin
