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Do you know there are many kinds of grass? Some are tall. The kind that grows around your house is short grass. But field grass often grows as tall as a man.
Some food that we eat comes from plants of the grass family. Wheat and rice are two of them. We use wheat to make bread. We use both wheat and rice to make breakfast. At some places, people eat more rice than any other food.
Animals as well as people get food from the grass family. Cows eat hay(干草). Do you know the kind of grass that horses like to eat?
1.Which of the following belongs to(属于) the grass family?
A. Wheat. B. Rice. C. Apples. D. A and B.
2. We use ____ to make bread.
A. rice B. fruit C. wheat D. grass family
3.Which of the following doesn’t get food from the grass family?
A. Horses. B. Sheep. C. Dogs. D. Cows.
4.Which of the following is wrong?
A. The grass family are all short.
B. There are many kinds of grass.
C. Field grass often grows as tall as a man.
D. Horses get food from the grass family.
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My name is Tom. My best friends are John and Ann. John lives near my house and we are in the same class. He’s tall and thin, he has blonde hair and blue eyes. He is polite and very clever. He is very good at math and sometimes helps me with my homework sometimes. He usually wears jeans and a blue T--shirt. We three often play basketball in a nearby park.
My friend Ann studies at another school.
She’s short and slim(苗条的) with straight brown hair and brown eyes. She’s a little bit shy. We all have Kong fu lessons every Tuesday and Friday afternoon. We love Kung fu very much. Ann is really good at Kung fu. We call her the “Kong fu girl”. Sometimes she practices Kung fu with us. She loves wearing a T—shirts and a hat. The three of us have great fun together.
1.What does John look like?
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A.He is short |
B.He is fat |
|
C.He is tall and thin |
D.He has brown eyes |
2.What do three children do together?
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A.Play football |
B.Play basketball |
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C.Have English lessons |
D.Watch movies. |
3.Who is good at math?
|
A.Ann |
B.Tom |
C.John |
D.All of them |
4.When do they have Kung fu lessons?
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A.Every Monday |
B.Every Tuesday afternoon. |
|
C.Every Saturday afternoon. |
D. Every day |
5.Which of the following is NOT true?
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A.Ann is a little bit shy. |
|
B.John usually wears jeans and a T-shirt. |
|
C.They call Ann the “kung fu girl”. |
|
D.Tom dislikes kung fu at all. |
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This is Jim. He is thirteen. He is from the USA. He is a student. He has a good friend. His name is Jack. Jack is twelve. He is from Canada. Jack is tall but Jim is short. They are in the same class, Jim is in Class Two. Jack is in Class Two, too. They go to school(上学) at seven in the morning and go home(回家) at six in the afternoon.
根据短文内容,选择正确答案。
【小题1】Jim and Jack are ____.
| A.sisters | B.friends |
| C.teacher and student | D.from the same country(国家) |
| A.short | B.tall | C.strong | D.big |
| A.the same class | B.different grades |
| C.the same color | D.the same family |
| A.Class 4 | B.Class 3 | C.Class 2 | D.Class 1 |
| A.6:00 | B.7:00 | C.7:30 | D.8:00 |
As we know, scattering(散射) happens when light goes through the air. For the same media(媒质), if the wavelength islong, the scattering will be short. If the wavelength is short, then the scattering will be long.
Of all lights we can see red has the longest wavelength, so the scattering is the weakest. That means the red light travels far. In fact, it travels farther on rainy days.
Using the red light can help drivers in farther areas sec the lights. It helps drivers stow down or stop in lime. If drivers don't see the red light until they are close, they may not be able to stop the car in time. An accident may happen Red can also excite people. We can act more quickly when we see the color red. In a word, red lights help drivers stop in time and help prevent accidents.
【小题1】 When the traffic lights turn ______, we will stop driving a car.
A. red B green C. yellow
【小题2】According to the passage, the scattering of the red light is the _______.
A. longest b. weakest C. farthest
【小题3】 The underlined word "wavelength" means________ in Chinese.
A.波浪 B.光波 C.波长
【小题4】 What can the red light help drivers do?
A. It can help drivers in farther areas see the lights.
b. It can help drivers slow down or stop in time.
C.A and b
【小题5】Which of the following is the best title?
A. Why do accidents happen
b. How does the red light travel
C. Why do we use red traffic lights 查看习题详情和答案>>