Lab work is fun but you must be careful. Listen carefully when your teacher reads and explains the rules before your first lab lesson.

LAB RULES

Throughout the lessons

* Do not enter the science lab without the teacher's permission(允許).

* No food or drinks are to be allowed in the science lab.

Before the Experiment

* Read all instructions carefully before every experiment(實(shí)驗(yàn)).

* Prepare all apparatus(儀器)and put them in right places so that you will not knock them over while doing the experiment.

During the Experiment

* If you are unsure of how to use any apparatus or how to operate, ask your teacher for help.

* Never smell or taste chemicals unless your teacher gives permission.

After the Experiment

* Wash all apparatus after use and return them to the places where they were.

* Throw waste materials into 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.You must know the LAB RULES ______ the first lab lessons.

A. before B. since C. during D.after

2.It is necessary for you to ______ before every experiment.

A. read all instructions carefully B. take enough food and drinks

C. smell chemicals immediately D. talk with your classmates.

3.If you are not sure of how to use any apparatus, ______.

A. read the rules carefully B. try them again and again

C. ask your teacher for help D. return all apparatus to the places where they were

4.The underlined word “spill” means ______.

A. 照射 B. 傷害 C.摔下 D.濺出

5.When you are in the science lab, you mustn’t ______.

A. be careful in order to prevent injury B. listen carefully when your teacher explains the rules

C. taste chemicals without the teacher’s permission D. throw waste materials into proper waste baskets

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:初中英語(yǔ) 來(lái)源:江蘇省鹽城市2015-2016學(xué)年八年級(jí)下學(xué)期期末考試英語(yǔ)試卷 題型:任務(wù)型閱讀

Chinese people have been celebrating Mid-Autumn Festival and enjoying mooncakes for centuries. Mooncakes have the shape of a full moon on mid-autumn night. They carry people’s wishes to the families they love and miss.

There are many traditional folk stories about this festival. However, most people think that the story of Chang’e is the most touching. Chang’e was Hou Yi’s beautiful wife. After Hou Yi shot down the nine suns, a goddess gave him a magic medicine to thank him. Whoever drank this could live forever, and Hou Yi planned to drink it with Chang’e. However, a bad man, Feng Meng, tried to steal the medicine when Hou Yi was not at home. Chang’e refused to give it to him and drank it all. She became very light and flew up to the moon. Hou Yi was so sad that he called out her name to moon every night. One night, he found that the moon was so bright and round that he could see his wife there. He quickly laid out her favorite fruits and desserts in the garden. How he wished that Chang’e could come back!

After this, people started the tradition of admiring the moon and sharing mooncakes with their families.

回答下面5個(gè)問(wèn)題, 每題答案不超過(guò)5個(gè)詞。

1.What do people often eat to celebrate Mid-Autumn Festival?

2.Which story do people think is the most touching?

3.What did the goddess give Hou Yi?

4.How did Hou Yi feel after his wife flew up to the moon?

5.Why do people share mooncakes with their families?

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:江蘇省2017屆九年級(jí)中考最后一模英語(yǔ)試卷 題型:單項(xiàng)填空

He hasn’t heard from his friend______ last month.

A.since B. by the end of. C. for D. until

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:山東省淄博市沂源縣2017屆中考一模英語(yǔ)試卷 題型:閱讀理解

Medical experts say most Americans do not get enough sleep. They say more Americans need to take a nap—that is to rest for a short period in the middle of the day. They give people advice to sleep lightly before continuing with other activities. The experts say naps might improve health by reducing pressure.

Some European and Latin American companies have supported the idea of napping for many years. They ask people to leave work, go home and have a nap before returning. In the United States, some companies let workers rest simply in their offices. They believe this can help workers make fewer mistakes and also increase the amount of work that a person can do.

Sleep experts say it is likely that people make more mistakes at work than at other times. They say people should not carry out important tasks when they feel sleepy. And they say the best thing to do is to take a nap. About twenty minutes of rest is all you need. Experts say this provides extra energy and can increase your effects until the end of the day. But experts said that a nap should last no more than twenty to thirty minutes. A longer nap will put the body into deep sleep and waking up will be difficult.

1.What’s the best way to increase workers’ effects?

A. Talking with friends.

B. Doing relaxing exercises.

C. Laughing, smiling and crying.

D. Having a rest for twenty or thirty minutes.

2.What will happen to the workers if they keep out working without any rest?

A. They will get a lot of money.

B. They will fail in their jobs and even cause a lot of trouble.

C. They will live a happy life in the future.

D. They will feel better after finishing every day jobs.

3.The meaning of the underlined word “reducing” in the first paragraph is .

A. 加大 B. 緩解 C. 產(chǎn)生 D. 制造

4.The passage mainly talks about .

A. taking a nap during a day

B. the disadvantages of taking a nap

C. Americans who don’t have a nap during the weekends

D. the advantages of deep sleep

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:2017年初中畢業(yè)升學(xué)考試(內(nèi)蒙古赤峰卷)英語(yǔ)(解析版) 題型:任務(wù)型閱讀

Abraham Lincoln was born in Kentucky in 1809. His mother died when he was ten years old. Later, his family moved to Illinois and his father remarried. The family was poor, so they had to struggle just to live. In Illinois, there were neither teachers nor schools, but Lincoln’s stepmother encouraged him to study. He learned to read and write while working on the farm.

At twenty-one, Lincoln left home. He soon received a law license and became a lawyer. People trusted him and began to call him “Honest Abe”.

During the following years, he took a more active part in polities. Soon he was not only a highly respected lawyer but also a well-known politician. He was elected the sixteenth president of the United States in 1860, and in the next year the Civil War broke out.

The Civil War was between the southern states that wanted to leave the Union and form their own country, and northern states that wanted to keep all the states as one country. The southern states wanted to keep the laws that allowed them to own slaves. Both the northern states and President Lincoln wanted to get rid of those laws. On April 9, 1865, the Civil War ended and all slaves were set free.

Less than a week later, on April 14, 1865, Abraham Lincoln was shot at the Ford Theater in Washington D.C. He died the next day from his wounds.

Abraham Lincoln

Birth

★He was born in 1809.

His family

★His mother died when he was 1. .

★His stepmother was 2. to him and encouraged him to study.

Unusual Experience

★A farmer, a lawyer, a politician and the sixteenth 3. of the United States.

Achievement

★The Civil War broke out between the southern states and the 4. states.

★All slaves were set free when the Civil War 5. .

★“Keeping all the states as one country” came true.

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:2017年初中畢業(yè)升學(xué)考試(湖北宜昌卷)英語(yǔ)(解析版) 題型:選詞填空

閱讀短文,將方框里的五個(gè)句子還原到短文當(dāng)中。

A. One idea is to test yourself.

B. Even worse, you could have an English test.

C. She believes they are not as useful as other habits.

D. These methods are commonly used in schools around the world.

E. So it’s possible that you are underlining something not so important.

Imagine you have a history or math test in school. 1. How should you prepare for this terrible event?

Should you reread your history, math or English books? What about underlining important words or sentences? 2. But are these truly the best methods?

Mary Pym, an American scientist, says that both rereading and underlining are ineffective(無(wú)效的)study tools, but better than not studying at all. 3.

When you reread something, you are not trying to actively receive the information. It seems that you already know the information because you’ve already read it.

The problem with underlining is that you don’t always know what the most important information is. 4. .

What should you do if rereading and underlining are not the best ways to study for a test?

5. simple cards and practice exams can help when you want to make sure that you have learned something.

No matter what methods you choose, you should know that effective learning takes time and effort.

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:2017年初中畢業(yè)升學(xué)考試(湖北宜昌卷)英語(yǔ)(解析版) 題型:單項(xiàng)填空

–The plane won’t take off ______ the thick clouds move away.

--Let’s wait patiently for the announcement from the airport.

A. since B. though C. while D. until

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:2017年初中畢業(yè)升學(xué)考試(廣州卷)英語(yǔ)(解析版) 題型:閱讀理解

People can’t see you when you’re speaking on the phone, but they can hear you. So, the way you speak is especially important. In fact, researchers have calculated that 80% of communication over the phone is through your tone of voice; and only 20% is from the words you use. Here are our top tips on how to speak over the phone.

1. Facial Expressions

Your facial expression can influence your voice. For example, if you smile, your voice will sound warm and friendly, just the opposite, if you have an angry look on your face, it can make you sound unpleasant.

2. Volume

If you speak too loudly, you could sound angry. And if you speak too softly, it’ll be difficult to hear you. So, speak loudly enough to be heard clearly, but not so loud that you’re shouting.

3. Pace

The pace of your voice is how quickly you speak. And this can show how you feel. For example, an angry person might speak faster than normal. Or a downhearted person might speak very slowly. Try speaking a little more slowly than normal. This will make you sound confident, and it’ll make it easier for the other person to understand you.

4. Gestures

Gesturing can influence the tone of your voice. When you gesture, you bring more air into the lungs, which can make your voice sound warmer. Gestures are also useful to help you stress the right words or even find the words you need. The best thing about gesturing during a phone call is that no one can see what you’re doing, so you can gesture as wildly as you like!

5. Movement

If you’re feeling nervous, stand up and move around. It will reduce the nervousness in your body and help your voice to sound more confident.

6. Pauses (停頓)

Using pauses every now and then can help you to slow down. This will make you sound more confident and in control. Also, if you pause after giving some new information, it’ll give the other person time to understand it. At the same time, listen to how the other person uses pauses. They could tell you something about the speaker’s feeling. For example, when a speaker is really angry, he might use pauses and says, “I... am... so... angry...”

1.How much of telephone communication is from the words you use?

A. 20%. B. 40%. C. 60%. D. 80%.

2.What can people do to reduce their nervousness on the phone?

A. Gesture wildly. B. Move around. C. Raise their voices. D. Make facial expressions.

3.How can pauses help people talk on the phone?

A. The speaker can show he is friendly. B. The speaker can tell more information.

C. The listener will feel confident and in control. D. The listener will have time to understand the words.

4.What is the passage mainly about?

A. How to control the speed of your speech. B. Different good ways of talking on the phone.

C. Reasons of making gestures while talking. D. How to improve communication among friends.

5.What is the writer’s opinion about telephone talk?

A. Your voice on the phone will show what you’re feeling.

B. Using too many pauses while talking will annoy others.

C. Speaking loudly makes it easier for others to understand you.

D. The words you use are more important than the way you speak.

查看答案和解析>>

科目:初中英語(yǔ) 來(lái)源:2017年初中畢業(yè)升學(xué)考試(四川南充卷)英語(yǔ)(解析版) 題型:任務(wù)型閱讀

Keep More Food on the Table

It’s said that in some parts of the world, people are facing the problem of hunger. So what can we do to help them? Here are some suggestions:

Cook from the fridge

Start with the fresh foods. If you have some in the fridge, use them first. Make a meal with what you have got instead of running out to the supermarket for something else.

Learn to read the labels

“Best-before” and“use-by” dates are more important. Learn to know the different periods of foods and know how to cook them in the right way. For example, black bananas are proper for baking, fresh vegetables are good in soups, and bread that is not fresh can be turned into small pieces.

Use the freezer(冷凍室)

The freezer can keep foods fresh until you are ready to cook them, and store the cooked foods until you’re ready to eat them. It’s also the best place for the remaining food. Mark the date of the food nearby, so it’s easy to find the foods you need to eat first and you will never leave them there for too long.

Shop with a list

Plan meals ahead of time so that you know exactly what to buy. Doing this helps reduce food waste because it’s possible to buy too much of a certain food and then forget to eat or cook it later.

Title: Keep More Food on the Table

Passage outline

Support details

Why

Some people are facing the problem of hunger.

1.______

Cook from the fridge

It’s a good idea to use the foods that you have first, especially the 2._____ foods in the fridge.

Learn to read the labels

It is important to know “best-before” and “use-by” dates of different foods and cooking them 3.______.

Use the freezer

The freezer should be used to keep foods fresh and 4. ______ them from going bad.

Shop with a list

It’s necessary to plan meals ahead of time and shop with a list to reduce food 5. .

查看答案和解析>>

同步練習(xí)冊(cè)答案