题目
题型：不详难度：来源：
小题1: . The first of twenty being to grow when you are over six months old. The second set of thirty-two grows from the age of six until you are about twenty-one years old.
小题2: , you must drink plenty of milk and eat greens.
小题3: . Then little food will be left on or between them to cause decay(导致蛀牙). Make sure that you turn the brush and go up and down as well as brushing side ways. Use dental floss(牙线)to make sure all food is removed from in between each tooth, if you cannot brush your teeth after eating, raise them with water, or eat an apple or a carrot.
小题4: . If there is a hole in a tooth, he or she will fill it. If you do not have it filled, then the hole will grow larger. When a hole grows too big, 小题5: . It is better to keep all your second set of teeth for as long as possible. Filling a gap where a tooth has come out with a kind of bridge and using a false tooth costs a lot of money.
| A. To help your teeth grow strong. B. You should brush your teeth after each meal. C. Carrots and apples are good for your teeth. D. The tooth may have to be taken out. E. Everyone should have a set of good teeth. F. Try to visit a dentist every six months. G. Every person has two set of teeth. |
答案
小题1:G
小题1:A
小题1:B
小题1:F
小题1:D
解析
小题1:从后面的The first of twenty being …..,The second …可知每个人都有两幅牙。选G
小题1:从后面的句子：you must drink plenty of milk and eat greens.可知是为了让牙齿更强壮。选A。
小题1:从后面的句子：Then little food will be left on or between them to cause decay(导致蛀牙).可知每顿饭后要刷牙。选 B
小题1:从后面的句子：If there is a hole in a tooth, he or she will fill it.可知是六个月要看一次牙医。选 F
小题1:从前面的句子：When a hole grows too big, 可知这个牙就要被拔出，选D
核心考点
试题【How to protect your teeth 小题1: . The first of twenty being to grow when yo】；主要考察你对科普环保类等知识点的理解。[详细]
举一反三
When you hear the word “scitentist”, what do you think of? Many people think scientist are people in clean white coats who work in labs. And some scientists do work in labs. But there are 26 scientist who work in woods and jungles. These scientists are called “animal behavior (行为) scientists”, and they study animals as they live in nature.
Why don’t these scientists catch animals and study them in zoos? The 27 is in the word “behavior”. Animals behavior scientists want to learn 28 animal behave in their wild homes. When animals live in cages (笼子) or in zoos, they do not act the same as they do when they are 29 . They may fight 30 each other, or they may not eat, or they may not raise (抚养) their babies as they usually would. To see real animal behavior, scitentists must go where the animals 31 .
So animal behavior scientists go into the jungles, the woods or the desert. There , their most important 32 are their eyes and ears. They watch and listen to the animals very 33 . They write down everything that happened in notebook. 34
they live near the animals, the scientists are careful not to frighten them. If the scientists are luncky, the animals will 35 no attention to them. Then the scientists can see how the animals really live.
The behavior scientists hope what they’ve learned about animal behavoir can provide clues (提供线索) to help people learn to live together more happily.
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Do you think there will be robots in people’s homes? It’s not a dream that every home will have a robot.
Now, robots are not only able to help people do the housework, they can also help the doctors do the difficult operations, play chess with people, play the piano and so on.
A new cooking robot is used in Beijing. It can cook all the dishes on the menu, you only need to wait two to four minutes, in the future, the robot will be a nurse, a security guard, or a partner in your life.
Experts(专家) believe robots will be used everywhere from the industrial( 工业的) robots to service robots. In the future, robots will become part of the family, and provide else service for people. We all look forward to the new robot age.
小题1: changed our lives in dm 1990s.
A. The robots B. The compilers C The TV sets D. The Interact
小题2: According to the passage, we know that a new cooking robot is being used in .
| A．the future | B．Beijing | C．many countries | D．many families |
A. They can help people do the housework.
B. They can help the doctor do the difficult operations
C. They can play chess with people.
D. A, B and C.
小题4:Experts believe robots will be used .
| A．only in a hospital | B．only in a filmily |
| C．only in a factory | D．everywhere |
| A．The computers changed our lives | B．Robots can cook |
| C．Robots are coming | D．Robots will be doctors |
The Mangrove Rivulus, a kind of little fish, lives in small pools of water. When their living place dries up, they live. on the land, said Scott Taylor, a researcher in Florida.
The fish can grow as large as three inches. They group together and breathe air through their skin before they can find water again.
The new scientific discovery came during a trip.
"We were travelling for fun. and one day I kicked over a log (圆木) and the fish came out," Taylor told reporters by telephone. He said he would make his study on the fish known to the public in an American magazine early next year.
In lab tests, Taylor said he found the fish can live up to 66 days out of water without eating.
Some other fish can live out of water for a short period of time. The walking catfish found in Southeast Asia can stay on land for hours at a time, while lungfish(肺鱼) found in Australia, Africa and South America can live out of water, but only in a not active(活波的)way. But no other known fish can be out of water as long as the Mangrove Rivulus and keep active, according to Patricia Wright, a biologist at a Canadian University.
More studies of the fish may tell how animals changed over time.
"These animals live in conditions similar to those millions of years ago, when animals began to move from water onto land," Wright said.
小题1:The Mangrove Rivulus is a type of fish that_________.
| A．lives on land in Africa |
| B．can stay alive for months out of water |
| C．prefers living in dry places |
| D．is the longest living fish on earth |
A, Scott Taylor. B. Some reporters.
C. Patricia Wright. D. Scientists from Europe.
小题3:According to the passage, lungfish can___________.
| A．breathe through its skin | B．be found in Asia |
| C．keep alive out of water | D．keep alive and walk on land |
| A．The Mangrove Rivulus fish can live out of water as long as other animals if it has something to eat. |
| B．Millions of years ago, animals began to live onto land from water. |
| C．Lungfish found in Australia, Africa and South America can live out of water in a not active way. |
| D．The walking catfish found in Southeast Asia can stay on land for hours at a time. |
| A．ft was made by Scott Taylor, a researcher in New york. |
| B．It was helped by an American magazine. |
| C．It was helped by Patricia Wright. |
| D．It was made by a researcher while travelling. |
In many high schools，there are strict rules about using mobile phones. If your phone rings in class，for example，the teacher will be very angry.
Every mobile phone has a ringtone (铃声). It tells you that someone is calling you. Now，there is a ringtone called “mosquitotone (蚊子铃声)”. Using it，students can receive calls and text messages (短信) in class but the teacher will not realize what is happening. How?
Mosquitotone has a special sound. Only children and teenagers can hear it. As we get older，we are unable to hear some sounds with high frequencies (频率). As a result，a child or teenager can hear the mosquitotone ringtone, but it’s_inaudible_to someone 20 or older.
But sometimes，people over 20 can hear the ringtone. One British student’s phone uses mosquitotone. In class，the student’s phone rang. The 32yearold teacher looked at the student and became unhappy. “I heard that. You know the rule：no mobile phone in class.”
Not all the students are interested in mosquitotone. Jerry Jones，a high school student of 17，says，“Using mosquitotone too often is bad for our hearing. I may use it for pleasure，but not in class. It’s unfair to the teachers！”
What do parents think of mosquitotone？“I think it is perfect for places like movie theaters，” says Connie Neeson,44.“Think about it. Yon’re watching a film and someone’s mobile phone rings. Mosquitotone is good because many people don’t hear it. However，it also has a bad influence on their study if students use it in class.”
小题1:Mosquitotone works because ________.
| A．it is very loud | B．it has no sound |
| C．it has a beautiful sound | D．it uses high frequencies |
| A．it can’t be seen by | B．it can’t be heard by |
| C．it isn’t popular with | D．it isn’t healthy for |
| A．was late for class | B．didn’t do his homework |
| C．couldn’t answer her question | D．was using a mobile phone in class |
| A．has no bad influence | B．is unfair to the teachers |
| C．has its advantage and disadvantage | D．can’t be used in any public place |
Conflicts(矛盾）go between parents and children. It"s hard to tell who are right and who are wrong. A child of 7-8 always finds some reasons to have a conflict with it"s parents. Whether it is about some toy, studies, a party or a company, there is always a difference between them. And it becomes worse when they answer you back. Scientists tell us that children should be treated with care. Yes, sure they should respect their elders.
We are partly
responsible(有责任的）for this. At an early age we encourage children to behave like adults, just because we find it funny. The kids on the other hand consider this same behavior as normal and get used to it. And when it is not funny for us any more, we expect them to stop it, but by then it is already too late. Only when they reach a certain maturity will the children realize that answering back and being rude are not acceptable(可接受的).Until then, most of the time their behavior is difficult to change, unless by force(暴力）.And use of force is against the every good idea, as it weakens the child"s confidence.So it is one thing to bring a child into this world but quite another to make them into well mannered citizens. The best way is to be a goo
d example ourselves, as our children are the mirrors of us adults. 小题1:_______are all lovely and lively.
| A．Children | B．Toddlers | C．Kids | D．Grown-ups |
| A．fathers and mothers | B．parents and children |
| C．parents and toddlers | D．parents and parents |
| A．学期 | B．阶梯 | C．知识 | D．成熟 |
| A．Answering back . | B．Being rude. |
| C．Using force. | D．Respecting elders. |
| A．Children often copy what their parents do. |
| B．Children can not change their behavior. |
| C．Children"s behavior develops in their own way. |
| D．Children"s behavior is not acceptable. |
| A．to show the importance of good examples |
| B．to give examples on educating children |
| C．to show the growth of children |
| D．to show the behavior of children |
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