Easy floating
If you have ever been swimming in the ocean, you may have noticed that sea water is easier to float in than pool water. Here’s why:
You’ll need
Two clear bowls Food coloring Spoon Salt Two eggs
1. Fill bowls halfway with water.
2. Add 10 tablespoons of salt to one bowl, mix until it dissolves, and then add several drops of color.
3. Carefully put an egg into each bowl of water, and watch what happens.
What happens?
The egg in the plain water sinks. The egg in the salt water floats.
(If the salt water egg does not float well, mix more salt into the bowl. )
The water and salt particles (粒子) in the salt water bowl are closer together than plain water particles are. They press harder against the egg than the plain water particles do and the egg floats.
1.The purpose of the experiment is to explain ________.
A. why the egg floats in the salt water
B. why people float more easily in the sea
C. how we can make the egg float in water
D. how the water and salt particles act together
2.According to the text, if the egg in the salt water doesn’t float, which is the reason?
A. The water is too hot. B. The egg is not fresh.
C. The bowl is too small. D. The salt is not enough.
3.Why does the egg float in the salt water instead of in the plain water?
A. The egg gets more pressure. B. The salt particles press harder.
C. The water particles are closer. D. The food coloring gives a force.
假定你是李华，马上就要填报高考志愿（apply for admission into a university）了，你的外教Adam发邮件向你询问相关情况。请你回复邮件，内容包括：
1. 你打算申请的专业；
2. 选择本专业的原因；
3. 希望得到专业选择方面的指导。
注意：1. 词数100左右；
2. 可以适当增加细节，以使行文连贯。
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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。
When I first reached junior high school without my parents, I was very happy. Then I saw them getting further away from school gate. I started crying because of the thought of not often seeing my parents drove me crazily, I was then taken to my dorm in that I found other children very happy. I was sick because I hated eating the school food. I failed to concentrating in class. All I could think of was being at home with my family. As time gone by, I gradually adapted me to the school life. Thank to my parents, I finally learned to be independence and control my emotions.
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
TCM, or Traditional Chinese Medicine, is a profound (深远的) pathway to create the life you truly want to live and the life you were born to live. It’s a timeless bridge, 1.can start and support 2. (grow) in every life dimension—physical, mental and emotional.
TCM has an ancient but completely modern healing system and it has the power to unlock your true potential and help you develop and use your own unique talents. 3. (it) wisdom and ability to understand individual health needs empowers each person with a way 4. (unite) body, mind and spirit-the foundation for lasting and authentic health. TCM teaches you how to live 5. balanced and harmonious life.
It’s true 6. TCM is one of the oldest healing systems on the planet. It has 7. (actual) been in continuous practice for thousands of years. How can something so old still work for people living today?
TCM can 8. (apply) to help heal anyone no matter what year it is because it’s rooted in unchanging natural law, which has its source beyond time. The unique medicine grew out of 9. (observe) carefully how everything in reality functions at the deepest, invisible levels and interacts with the surface or visible physical levels. It’s the medicine of extraordinary relationships. Every TCM principle 10. (reflect) and harmonizes with the relationships that exist within natural law.
阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。
In the summer of my eleventh year, the home I had grown up in was ______ in the middle of the night. Thankfully, my mom, dad, brothers and I ______ through the smoke. However. we had only the night clothes we were ______ in.
I ______ the rest of that night with friends of our family ______ trying to sleep in a bed in their basement. That’s because I was too ______ to sleep. I didn’t know what ______ things would lie ahead of us. The next day, my mom ______ me a few T-shirts and pairs of jeans given to her by another friend. One pair of jeans was too short and the other was too long but I didn’t ______. At least I had some clothes again. Meanwhile my dad ______ to the blackened ruins of our home to see what he could find. The only thing he could ______ was my mom’s wedding rings. The plastic case she had put them in that night had melted but protected the rings from the ______.
As the ______ days went on, in spite of having little money, my dad was able to ______ us a dusty old house by the side of the road near where our old house had been. As we moved in, our friends and our community continued to ______ all they could to help us ______ our feet. There was more clothes, furniture, food, money and even some books for me to recover from the disaster.
Looking back now, I am ______ for all we went through because it ______ me so much about life, love and people. It showed that love is enough for the first time, when you have nothing left but ______. So here may you always have ______ love for all the days of your life.
1.A. burned out B. repaired C. moved D. washed away
2.A. walked B. escaped C. looked D. rested
3.A. working B. eating C. entertaining D. sleeping
4.A. preferred B. forgot C. spent D. described
5.A. usually B. unsuccessfully C. formally D. irregularly
6.A. scared B. crazy C. hesitant D. old
7.A. illegal B. harmonious C. terrible D. smooth
8.A. purchased B. brought C. awarded D. paid
9.A. regret B. respond C. care D. contradict
10.A. returned B. added C. referred D. admitted
11.A. lose B. sense C. save D. recall
12.A. mud B. ruins C. dust D. flames
13.A. summer B. spring C. autumn D. winter
14.A. buy B. rent C. borrow D. sell
15.A. explain B. discount C. empty D. donate
16.A. make use of B. check on C. get back on D. relieve of
17.A. hateful B. anxious C. bound D. grateful
18.A. guaranteed B. taught C. cautioned D. discouraged
19.A. love B. clothes C. furniture D. food
20.A. shallow B. romantic C. selfish D. sufficient
Basketball is a great sport that is not only fun, but also brings children many benefits in different ways. 1..
Playing basketball has physical benefits. Children are full of energy—they need to move, jump and run constantly. Basketball will allow them to control that energy in a positive way. It’s a full-body sport. 2. Since it’s a fast and dynamic sport, children need to follow the game and the continuous movement of the ball. The ball moves quickly from one side of the court to the other and the kids move at the same pace which helps improve both resistance and speed.
Playing basketball has cognitive (认知的) benefits. Children who practice playing basketball develop skills that help them fight against opponents and move around the court. This sport helps them increase their ability to concentrate. 3. Children will learn to assess surrounding situations and problems that may arise, and then find the best and fastest solution. The fast pace of the game encourages quick decision-making and stimulates their concrete and abstract thinking.
4. Since it’s a team sport, basketball promotes sociability, coexistence and respect among peers. It’s ideal for shy children because they will have to learn to interact with other players. This is important both to get better at the sport and to have more fun. They will also learn important values like cooperation, teamwork and competitiveness.
5. In fact, there are many other benefits. The most important thing is that it’s a very fast and fun sport. This tends to make the vast majority of children enjoy it.
A. Playing basketball just has entertaining benefits.
B Playing basketball has social and emotional advantages.
C. These are not all of the advantages of playing basketball.
D. This means that it strengthens muscles in their whole body.
E. It also makes them more aware of the environment around them.
F. This sport promotes healthy development in children for a number of reasons.
G. However, there are some disadvantages when children keep running on the court.
