It is easier to float in the ocean than it is to float in a swimming pool. Do you know why?
Ocean water is full of salt— and salt water can hold up more weight than fresh water. See for yourself!
You Will Need:
● 3 cups of warm water
● Measuring cup
● Wide-mouthed jar
● Salt
● Spoon
● Raw potato
You Will Do:
1. Pour 1.5 cups of warm water into the jar.
2. Add 1/3 cup of salt.
3. Stir(搅拌) until the salt is completely dissolved.
4. Add another 1.5 cups of water. Pour it slowly over the back of the spoon into the jar so that the two liquid will not mix together.
5. Gently place the potato into the jar. Do not drop it.
What Will Happen:
The potato will sink— but only halfway!
Why?
Salt water is heavier than fresh water, so it will stay on the bottom. The fresh water will remain on top.
The potato is heavier than the fresh water, but it is lighter than the salt water. That is why the potato will sink halfway down.
1.In which step of the experiment do you add the salt?
A. Step 1. B. Step 2.
C. Step 3. D. Step 4.
2.In Step 4 of the experiment, why do you pour the water over the spoon “slowly”?
A. It is easier to see what you are doing.
B. It pushes the fresh water to the bottom.
C. It will keep the water from coming out.
D. It will keep the liquids from mixing together.
3.In the experiment, what should you do right after you pour the water over the spoon?
A. Add the salt to the water. B. Stir the salt into the water.
C. Place the potato in the jar. D. Pour warm water into the jar.
假定你是李华，计划高考后暑假期间到美国University of California学习英语，为期两个月，学习期间想找一份兼职工作。请给你的美国的朋友Mary写信求助，要点如下：
1.你的暑期安排；
2.做兼职的原因；
3.打算找的兼职工作:餐厅服务员、汉语教师等。
注意： 1.词数100左右；
2.可以适当增加细节，以使行文连贯。
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
_________________________________________________________________
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(
)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Mistakes are unavoidable in life. But attitudes towards them may have a big difference. I still remember that my spoken English improved. In beginning, I always kept silent in the oral class to prevent myself from make mistakes. Before long my teacher knew about his situation. He encouraged me to speak out what I wanted to say regardless on mistakes. Whenever I have made mistakes and felt discouraged, my teacher and classmate would help me figure out how I could avoid them in the future. With time going by, I built up my confidence and now I can talk fluent in English. However, we just need to learn a lesson from the mistakes in order to improve our English.
Like the native Chinese, some foreigners have started to join their Chinese friends 1. sending or grabbing virtual red packets during the Spring Festival and other special 2. (occasion). Attracted by the unique way of interacting with people as well as the culture that gave birth to the phenomenon, many foreigners say competing with friends to grab red packets in 3. WeChat group can be a lot of fun.
Mattias Klement, 27, a Swede who has been living in China for years, said more foreigners have started to take part in this 4. ( active) because of the popularity of WeChat wallet.
"I think it is 5. (main) because more and more places now allow paying with WeChat. It’s also fun to just involve 6. (you) in the culture of it," said Klement. Two years ago, when some friends 7. (send) him 5.20 or 8.88 yuan red packets, he had no clue about the 8. ( hide) meanings. Now, he is not only quite familiar with them 9. has also been used to sending some.
"It’s nice to be able to say ‘I love you’ with 5.20 yuan, I guess," he said, laughing." I also remember 10. (try) to tick some of my friends off by paying back 99.99 instead of 100 just for fun.”
“Don’t talk to strangers ...” That is probably one of the ____ pieces of advice handed down from our parents. Yeah, they ____ well. Since there are bad people out there, it seems to be a good idea in order to help ____ us. And over the years we’ve learned how to keep our eyes ____ . We are used to making no eye contact with strangers.
___, the price that we pay for this ____ is that we grow up suspicious(表示怀疑的) of others and their motives. We tend to have a(n) ____ of strangers, which is neither necessary nor ______ as we grow older.
Most people out there are not sociopaths（反社会者). ____, most people are quite ____. What once protected us from bad people is now preventing us from establishing relationships with
___ people!
In general, you know that the random stranger standing next to you is very ____ to kidnap (绑架) you, yet the emotion of fear is ____ associated with talking to them. So you ____ do it. But you miss out on a lot by closing yourself off to new people like this.
Instead, you should actively ____ that people in general are friendly. Why? Because they are. Most people actually are nice. We are ____ creatures, and we welcome interactions with others. Think about it: when a stranger starts a(n) ____ with you, how do you usually ____ ?
Besides, you never know who you might ____. The person standing behind you in a line could one day be your best friend. It ____. But even if it's not that extreme, you never know if that person has a job opportunity for you, or is just a cool person who you would enjoy having a brief conversation with.
1.A. shortest B. worst C. longest D. best
2.A. meant B. planned C. spoke D. worked
3.A. inspire B. instruct C. change D. protect
4.A. up B. open C. down D. shut
5.A. Especially B. Thankfully C. Unfortunately D. Uncertainly
6.A. safety B. health C. power D. delight
7.A. anger B. pain C. shame D. fear
8.A. important B. obvious C. humorous D. reasonable
9.A. In case B. In fact C. At times D. At first
10.A. brave B. friendly C. smart D. patient
11.A. bad B. famous C. good D. common
12.A. ready B. Unlikel C. eager D. unwilling
13.A. still B. never C. only D. even
14.A. always B. often C. sometimes D. seldom
15.A. doubt B. assume C. guess D. decide
16.A. living B. complex C. unique D. social
17.A. meeting B. experiment C. argument D. conversation
18.A. listen B. connect C. react D. devote
19.A. hurt B. forget C. meet D. benefit
20.A. happens B. depends C. affects D. fails
When you’re dealing with a stressful situation or going through a hard time, people in your life can help you. When someone who cares knows what you’re going through, it helps you feel understood and not so alone. 1.. Problems seem smaller when you talk about them with the right person. You can do better and find out solutions more easily when you share your problems.
There are lots of different ways to get and give help. 2.. Other times you need advice on things. Help can be very easy, like a homework project. Or it can go on for a while, like teaching to bring up a failing grade or advising to get through a difficult personal situation.
It’s likely that you remember times someone helped you. 3.. Friends helped you get through sadness or deal with disappointment. Teachers might have guided you through the college application process. 4.. You might give a hand to your classmate who met difficulty.
Friends, parents, teachers and other adults can be great resources when you need help. There are also times when you need the extra help that a professional can provide best. Doctors can offer specialized help for a health problem. 5..
A. Having a right person means a lot.
B. Parents taught you to stop a bad habit.
C. Difficulties are everywhere in your life.
D. You need to learn to give help in the right way.
E. Sometimes you just want to hear an encouraging word.
F. Turn to the professional people for help when you need.
G. And you can also remember times when you helped others.
