Laboratory（实验室）word is your chance to learn science firsthand. It can be fun but you must be careful to prevent injury. Listen closely when your teacher reads and explains the rules before your first lab lesson.
| LABORATORYRULES | |
| Throughout the Lesson | ● Do not enter the science lab without the teacher’s permission. ● No food or drinks are to be allowed in the science lab. |
| Before the Experiment | ● Read all instructions carefully before every experiment. ● Prepare all equipment and organize them so that you will not knock them over while doing the experiment. |
| During the Experiment | ● If you are unsure of how to use any equipment or how to use, ask your teacher for help. ● Never smell or taste chemicals unless your teacher gives permission. |
| After the experiment | ● Wash all equipment after use and return them to the places where they were. ● Throw waste materials in proper waste baskets. |
| First Aid | ● Report all accidents to your teacher immediately. ● If you spill any chemicals onto your body or clothing, wash with plenty of water and report to your teacher. |
1. Before every experiment, you should ______.
| A．taste the chemicals first | B．clean all the equipment |
| C．read all instructions carefully | D．report all the accidents to the teacher |
| A．bring food into the lab | B．enter the lab anytime |
| C．smell chemicals as you like | D．learn science directly in the lab |
| A．Before the Experiment | B．First Aid |
| C．During the Experiment | D．After the Experiment |
相似题推荐
Pay attention to what your teacher gives about a coming test. Write down exactly what you will be tested on. Knowing what the test will cover is half done.
Make a review list that includes important points from class and reading material. Then your studying notes will be in one place. What’s more, rewriting the material will help you to remember it.
Don’t cram (突击式学习)！Test preparation begins the first day of class, so keep on doing your reading and homework. Then you just need to review for the test—not learn all the materials. If you wait until the night before to try to learn everything, you will only put more stress (压力) on yourself.
Get a good night’s sleep before the test, but if you can’t, don’t be awake the whole night. Research shows that getting at least four hours of sleep produces the better test results.
Eat a healthy breakfast to keep your mind sharp (敏锐的). Avoid sugar, as it will weaken your ability to concentrate (全神贯注).
1. How many suggestions have you got from the text?
| A．Two. | B．Three. | C．Four. | D．Five. |
| A．in fear of the test | B．good at learning |
| C．in need of sleep | D．poor at reading |
| A．From their classmates. | B．From their teachers. |
| C．From reading material. | D．From studying notes. |
| A．be busy reviewing at first |
| B．enjoy the first day of class |
| C．make good test preparation |
| D．put more stress on themselves |
| A．Eating a healthy breakfast. |
| B．Taking too much sugar. |
| C．Keeping your mind sharp. |
| D．Getting a good night’s sleep. |
The children welcomed me warmly on my first day. They asked me a lot of questions, and I told them stories about myself and my life in Shanghai. The next day, I gave them a test to find out their level (水平). To my surprise, though the test was very easy, over half of the students couldn’t finish it. But they all wanted to learn new things, ▲ I was busy preparing lessons and reading test papers every night. I enjoyed teaching these lovely and hardworking children, and I could see that they were making progress with my help. I have also learned a lot from them. I understand their lives better, and we are good friends now.
I have worked in Longzhou for a year now. I love the small village and the children. In fact, I would like to go on working here.
1. The writer is a volunteer teacher who comes from ________| A．Guangxi | B．Longzhou | C．Shanghai | D．Shanxi |
| A．It’s difficult for me. |
| B．I knew they needed me. |
| C．I knew they liked me. |
| D．They didn’t want me to stay here. |
| A．felt upset | B．was happy | C．got angry | D．felt satisfied |
| A．Both the writer and the students are working hard. |
| B．The writer doesn’t want to work there any longer. |
| C．The students made progress with the help of the writer. |
| D．The writer loves the children because they’re lovely and hard-working. |
Why do you teach? My friend asked the question when I told him that I didn't want to be considered for an administrative position．He was puzzled that I did not want what was obviously a "step up" toward what all Americans are taught to want when they grow up：money and power．
Certainly I don't teach because teaching is easy for me．Teaching is the most difficult of the various ways I have attempted to earn my living．I teach because teaching is a profession built on change．When the material is the same，I change the more important，my students change．
I teach because I like the freedom to make my own mistakes，to learn my own lessons，to stimulate myself and my students．As a teacher，I'm my own boss．If I want my freshmen to learn to write by creating their own textbook，who is to say I can't? Such courses may be huge failures，but we can all learn from failures．
I teach because I like to ask questions that students must struggle to answer．The world is full of right answers to bad questions．While teaching，I sometimes find good questions．
Besides，teaching gives me pace，and variety，and challenge，and the opportunity to keep on learning．
Last，teaching offers love．Not only the love of learning and of books and ideas，but also the love that a teacher feels for that rare student who walks into a teacher's life and begins to breathe．Perhaps love is the wrong word：magic might be better．These are the real reasons I teach，these people who grow and change in front of me．Being a teacher is being present at the creation，when the clay（黏土）begins to breathe．
I teach because，being around people who are beginning to breathe，I occasionally find myself catching my breath with them．
1. ．What do all Americans are to taught to get _______when growing up?
| A．money and power | B．freedom and happiness |
| C．wealth and safety | D．life and money |
| A．is full of love | B．can change anytime |
| C．can make people breathe | D．A & C |
| A．it is difficult for him to do |
| B．it is free to make mistakes |
| C．it brings him too much |
| D．it makes me him lose much |
| A．an enemy | B．a lesson | C．a teacher | D．a friend |
| A．Teaching is terrific |
| B．Teaching is difficult |
| C．Why I like teaching |
| D．Why I chose teaching as a career |
【推荐1】Have you heard the latest buzz (蜂鸣)? Bumblebees have. According to a new study, trends can pass through a bumblebee colony (族群) as bees watch and copy one another’s behavior. This means the bees have a culture, which is a set of shared behaviors animals learn from one another. People once thought humans were the only species to develop cultures, but some animals have also been found to have this ability.
A research team from the UK set up puzzle boxes that offered a sweet-tasting reward when opened. “Demonstrator” (演示者) bees were taught to open the boxes by pushing a red tab or a blue tab. Some “Observer” (观察者) bees saw the demonstrator bees open the boxes, while other bees were not allowed to watch before trying to open the boxes themselves.
The group of bees that had watched a demonstrator were able to open the puzzle boxes about 28 times a day, while the other group opened them only once a day. The observer bees almost always used the same method as the demonstrators did. For example, those who watched a bee open a box using the red tab almost always pushed the red tab as well.
“Some of them would play around with the box and find another way but they still would return really strongly to the demonstrator’s preferred behavior,” Alice Bridges, the lead author of the study, told The Washington Post. She said the bees were developing “a local trend”.
Even when the researchers allowed groups of bees to see both methods, each group soon developed its own trend. A skill was passed along as new bees learned from more experienced bees. After several days, one colony came to prefer the “blue method” while the other almost always chose the “red method”.
“The fact that bees can watch and learn, and then make a habit of that behavior, adds to the fact that they are far smarter creatures (生物) than a lot of people have thought,” said study co-author Lars Chittka.
1. How does the scientists explain their findings about the bumblebees?| A．By introducing some rules. |
| B．By listing a lot of numbers. |
| C．By mentioning achievements in others’ studies. |
| D．By making comparisons in different experiments. |
| A．A bumble bee colony. | B．The blue method. |
| C．A set of shared behaviors. | D．The red method. |
| A．A Recent Study on Different Bees |
| B．A Culture among Bumblebees |
| C．How do Bumblebees Make a Buzz |
| D．Why Bumblebees Live as a Colony |
【推荐2】Have you ever imagined one day people go to other planets to hold the Winter Olympics?
Mercury (水星) is the closest planet to the sun. In the daytime, the temperature can be up to 430℃, but at night it cools down to -200℃. There’s one area that the sun can never reach. There’s a lot of ice there. Maybe we can go speed skating and figure skating (花样滑冰) there!
The temperature on Mars is between -140℃ and 30℃. At the north and south poles (极) of Mars, there are areas covered by ice and snow. There is also a big mountain called Olympus. So maybe we can ski on Mars!
Pluto (冥王星) is a small planet far away from the sun. It’s very cold there, about -229℃. There’s a lot of ice. It’s even harder than steel. So maybe we can go sledding (滑雪橇) on Pluto.
1. The temperature at daytime on Mercury can be up to ________.| A．430℃ | B．30℃ | C．-140℃ | D．-229℃ |
| A．snow and rain | B．cloud and ice | C．snow and cloud | D．ice and snow |
| A．Go swimming. | B．Go sledding. | C．Go skiing. | D．Go running. |
【推荐3】
Like detectives, archaeologists use evidence to solve mysteries. Detectives look for clues to solve crimes. Archaeologists look for clues to help them understand how people lived long ago. In fact, the word “archaeology” means “the study of ancient things”. One type of evidence used to learn about the past is pottery.
People have used pottery for thousands of years all over the world. Old pottery is usually found in pieces called “potsherds”. Sometimes potsherds found in the same place can be put back together to recreate the original pot. Even in pieces, old pottery can teach us about the past. When examining pottery, archaeologists consider not only its appearance but what it was made of and how it was made. With this knowledge, they can get information about people’s lives in ancient times. ①
Pottery is made by first adding water to a kind of soil called clay. When wet, clay can be formed into shapes. It is then heated. This hardens(使变硬) the clay and allows it to keep its shape. To make clay easier to shape and heat, potters(制陶工) use something called “temper”. Different materials can be used as temper. An archaeologist can tell where a pot came from by the types of clay and temper that were used. Sometimes a pot found in one location might have materials from another place. ②
Some of the earliest pots were made quite simply. A piece of clay was hollowed(掏空) out and shaped into a bowl. It was then heated at a low temperature. The finished pot was rough(粗糙), and often undecorated. This type of pot might be used for cooking. ③
Later, coiled pots were made. These were made by first rolling the clay into a long snake shape. The coil was then wound(绕) in circles to form a pot. They were often decorated in different ways. These pots were heated at high temperatures. The higher the temperature, the harder and longer-lasting the pot. Further improvements in pottery-making developed in different times and places. ④
A pot’s shape and decoration can provide clues about the past. Painted pictures might show events from daily life or from ancient stories. Archaeologists know certain shapes and styles that were common in different times and places.
Archaeologists study the differences in types of pottery closely. Because of their work, these daily objects can tell some of the mysteries of the past.
1. When examining pottery, archaeologists consider not only its appearance but what it was made of and how it was made.The word “examining” means “________” in English.
| A．studying | B．displaying | C．searching | D．discovering |
| A．To remind readers that both words are very useful. |
| B．To make sure readers understand the words correctly. |
| C．To show that these words come from other languages. |
| D．To introduce the words that may be unknown to readers. |
| A．Before the clay is shaped. | B．After the pot is heated. |
| C．While the pot is being decorated. | D．When the clay is hollowed. |
| A．① | B．② | C．③ | D．④ |
| A．People have used pottery for thousands of years all over the world. |
| B．Pots are decorated with pictures that show events from ancient stories. |
| C．Ancient pottery can tell about the lives of the people who made and used it. |
| D．Archaeologists look for clues to solve mysteries in different times and places. |
【推荐1】It is widely agreed that the over-use of fossil fuels, such as coal and oil has caused serious environmental problems. Scientists are trying to find new clean energies that do not pollute the air, the water or the ground. Solar power is one of them.
Solar power is a kind of electricity which is produced by taking energy from the sun, using solar panels (面板，电池板). The power is easy to get and will never be used up. Whenever it is sunny, there is the power. The power is clean and renewable. It helps to reduce waste and pollution, which is great for the environment. In the areas that are too far away to send electricity to or not easy to build electric power plants, solar power is especially necessary. It enables the people there to use lights, TVs, computers, washing machines, fridges and many other things.
Therefore, more and more countries, such as China, the USA, Japan and India, encourage scientists to develop practical technology to put solar power to use. However, the power is not as widely used as expected.
One of the challenges is that a solar power system needs sunshine. Countries or areas with a lot of rain, like the UK, are not suitable to develop such power system. Secondly, a solar power panels requires a very large site to fix enough solar panels to collect sunlight and change it into electricity. Maybe an area in the desert would be one of the perfect places for such a plant to build. What’s more, solar panels are expensive at present though the energy itself doesn’t cost anything.
Today scientists are working hard to develop more practical and cheaper solar power system. Maybe one day solar power will be one of the most important clean energies in our life.
1. Solar power is a kind of energy taken from .| A．the air | B．the sun | C．the water | D．the ground |
| A．短缺 | B．滥用 | C．用完 | D．习惯 |
| A．Because a solar system needs sunshine. | B．Because solar panels are expensive. |
| C．Because fixing solar panels needs very large sites. | D．All over above. |
| A．The ways to use solar power |
| B．The advantages of solar power. |
| C．The places to build the solar power station. |
| D．The difficulties of putting solar power into use widely. |
| A．Solar energy itself is expensive |
| B．Solar power will run out very soon. |
| C．Solar power is a kind of clean and useful energy. |
| D．Solar power is much better than the other energetic. |
Laura once lost her purse, and worried for days. She was afraid to tell her parents about it. She even walked three miles to school each day because she didn’t have any money. She just kept thinking. “If I tell my parents, they’ll be angry!” But in the end, she talked to her parents and they were really understanding. Her dad said he sometimes made careless mistakes himself. They got her a new purse and asked her to be more careful. “I will always remember to share my problems in the future!” Laura says.
Robert Hunt advises students about common problems. He feels the same way as Laura. “It is best not to avoid our problems. We should always try to solve them.” He thinks that you can first find someone to talk to. This person doesn’t need to be an expert (专家) like himself. Students often forget that their parents have more experience than them and are always there to help them.
In English, we say that sharing a problem is like cutting it in half. So you’re halfway to solving a problem if you talk to someone about it!
1. These days students’ worries come from at times.
| A．their friends | B．their teachers |
| C．their school work | D．Both A and C |
| A．give an example |
| B．answer a question |
| C．introduce his friend |
| D．share his experience |
| A．solve | B．think about |
| C．deal with | D．keep away from |
| A．Laura’s teacher |
| B．an expert on students’ problems |
| C．a person with a problem |
| D．the writer of the passage |
| A．Problems and worries are normal in life. |
| B．Talking to someone helps to solve problems. |
| C．Parents have more experience than their children. |
| D．Students often have a lot of worries at school. |
【推荐3】Mr. Brown was writer. He wrote many books, and the thought they were quite good. He lived in the city. One morning, he went to a small town near the city to visit a friend. He went there by bus. When he got to the town,he saw a bookshop not far from the bus stop. As it was early, he decided to go in and have a look. There were many books in he shop. He was very happy that all the books in the shop were written by him. “Where are other writer’s books?” he asked the man in the shop. The man looked up at him and answered, “Oh, they are all sold out.”
1. Mr.Brown was a __________.| A．teacher | B．doctor | C．writer | D．farmer |
| A．visit his friend | B．sell his books | C．have a holiday | D．buy a present |
| A．the man in the shop only liked his books |
| B．the man in the shop was Mr. Brown’s friend |
| C．his books were better than the other writer’s |
| D．the other’s book were all sold out |
【推荐1】If you want to become a better reader, what should you know about speed of reading?
Some people read very rapidly, while others read very slowly. But which one is better?
The rapid reader may be a good reader when he reads a storybook for fun. But he may not be able to slow down enough to read directions carefully. He may read so rapidly that he does not take time to understand fully the ideas and information which are important to remember.
The slow reader may be a good reader when he reads directions for making something. But he may spend too much time in reading a simple story which is meant to be enjoyed but is not important enough to be remembered.
So, you see, either a rapid reader or a slow reader is not really a good one. If you wish to become a better reader, here are four important things to remember about speed of reading.
(1) Knowing why you are reading will often help you to know whether to read rapidly or slowly.
(2)Some things should be read slowly throughout. Examples are directions for making or doing something, science and history books, and maths problems. You must read such things slowly or remember each important step and understand each important idea.
(3)Some things should be read rapidly throughout. Examples are simple stories for enjoyment, letters from friends and bits of news from hometown papers.
(4)In some of your reading, you must change your speed from fast to slow and slow to fast, as you go along. You will need to read certain pages rapidly and then slow down and do more careful reading when you come to important ideas.
1. What should be read rapidly?| A．Directions for making something. | B．Maths problems. |
| C．Science and history books. | D．Storybooks, newspapers, personal letters, etc. |
| A．To read as fast as you can. | B．To fit your reading speed to your needs. |
| C．To read as slowly as possible. | D．To keep your reading at a certain speed. |
| A．Something about Careful Reading. | B．Be a Rapid Reader. |
| C．How to Read? | D．How to Be a Slow Reader? |
【推荐2】Jim is a little boy who stays with his grandma. He likes sweets and cakes. He always eats some sweet food before he goes to bed. And as soon as he gets up in the morning, he can find some cakes on the table in his bedroom.
One morning, before Jim got up, his grandma took some cakes to his bedroom. She saw Jim crying in bed.
“What’s the matter, dear?” his grandma asked in a hurry.
“I have a bad toothache,” said Jim.
So his grandma had to lake him to the dentist’s. Jim was looked over and the dentist pulled out the bad tooth for him at last.
Two days later Jim felt better and was at school again. Mrs. Hunt asked, “What was the matter with you those days, Jim?”
“I had a bad toothache, madam,” answered Jim.
“Oh, I’m sorry to hear that,” said Mrs. Hunt. “Is it better now?”
“I don’t know madam. It was left with the dentist,” answered Jim.
1. Who does Jim stay with?| A．His father. | B．His mother. | C．His grandma. | D．His grandpa. |
| A．Vegetables. | B．Fruits. | C．Sweets and cakes. | D．Hamburgers. |
| A．He had a headache. |
| B．He had a bad toothache. |
| C．He had a fever. |
| D．He had a stomachache. |
| A．A day. | B．Two days. | C．Three days. | D．Four day. |
| A．Jim’s teacher. | B．Jim’s mother. | C．Jim’s grandma. | D．Jim’s classmate. |
【推荐3】In England, people used to stand on the right of escalators(扶梯), allowing others to walk on the left. But there is some change to this rule. People can stand on both sides of escalators at Holborn station. As one of the busiest stations of London Underground, Holborn was the first station in the country to ask travelers to stand on both the right and left sides of escalators. A test was carried out first. The test which lasted for three weeks showed that standing on both sides actually reduced(减少)congestion by 30 percent—16 , 220 people an hour are able to travel on the escalator during rush hours compared to the usual 12 ,745 when both standing and walking are allowed.
Transport for London (TfL) hopes the new standing rule will make the most of wasted space on longer escalators, where most people choose to wait on the right. London Underground Operation director Peter McNaught said, Few customers choose to walk on longer escalators such as at Holborn, so much of the left-hand side is unused. We hope that this can lead to reduced congestion at Holborn and make journeys easier for all of our customers.”
1. In England, people used to walk .| A．on the right of escalators | B．on the left of escalators |
| C．in the middle of escalators | D．at the foot of escalators |
| A．For three weeks. | B．For four weeks |
| C．For two months. | D．For one month. |
| A．stand on both sides | B．stand on the left |
| C．stay at home often | D．take the underground less |
| A．事故 | B．人数 | C．拥堵 | D．班次 |
| A．The traffic in England. | B．London Underground Operation director. |
| C．The number of people on escalators. | D．New underground escalator rule in England. |
