A new book called "Battle Hymn of the Tiger Mother" by Amy Chua has caused a debate (争论) about cultural differences in parenting. Amy Chua is a teacher in an American university and both of her parents are Chinese. In the book, Ms. Chua writes about how she taught her daughters. She told NBC television that she had a clear list of what her daughters were not allowed to do, such as having a play date, watching TV or playing computer games and getting any grade less than an A.

Many people are against Amy Chua's parenting style (风格), even her husband, who is American. They say it is rude and unfair to children. But she says her parents raised her and her three sisters in that way.

Ms. Chua says after her younger daughter shouted "I hate my life! I hate you!" she decided to retreat because she was afraid of losing her daughter. But she also says American parents often have low expectations of their children's abilities.

"The debate is about what it means to be a successful parent and what it means to be a successful child," said Stacy DeBroff, who has written four books on parenting. She says Amy Chua's parenting style is not limited to Chinese families. It is a tradi-tional way of parenting among immigrants (移民). They hope to get a better future for their children.

She also sees a risk (风险). When children have no time to be social or to develop their own interests, they might not develop other skills that they need to succeed in life. DeBroff advises parents to develop their own style of parenting and not just repeat the way they were raised.

Ambulances took to a nearby hospital.

1）介绍写邮件的目的；

2）活动时间和地点：5月4日上午9点，学校报告厅；

3）活动内容：同学们表演节目，同时邀请Rick一起表演一个中西合璧的节目。

注意：1）词数100字左右；

2）可以适当增加细节，以使行文连贯；

3）开头与结尾已给出，不计入总词数。

Dear Mr. Rick,

    I really hope you can come and we can't wait to see you!

Yours sincerely,

Li Hua

It was a village in India. The people were poor. However, they were not unhappy. After all, their forefathers had lived in the same way for centuries

Then one day, some visitors from the city arrived. They told the villagers there were some people elsewhere who liked to eat frog's legs. However, they did not have enough frogs of her own, and so they wanted to buy frogs from other places.

This seemed like money for nothing. There were millions of frogs in the fields around, and they were no use to the villagers. All they had to do was catch them. Agreement was reached, and the children were sent into the fields to catch frogs. Every week a truck arrived to collect the catch and hand over the money. For the first time, the people were able to dream of a better future. But the dream didn't last long.

The change was hardly noticed at first, but it seemed as if the crops were not doing so well. More worrying was that the children fell ill more often, and there seemed to be more insects around lately.

The villagers decided that they couldn't just wait to see the crops failing and the children getting weak. They would have to use the money earned to buy pesticides (杀虫剂) and medicines. Soon there was no money left.

Then the people realized what was happening. It was the frog. They hadn't been useless. They had been doing an important job—eating insects. Now with so many frogs killed, the insects were increasing more rapidly. They were damaging the crops and spreading diseases.

Now, the people are still poor. But in the evenings they sit in the village square and listen to sounds of insects and frogs. These sounds of the night now have a much deeper meaning.

译: 。

    Small talk is the short conversations we have at parties, while we wait in line at the store, at family events or work. Sometimes we make small talk with people we already know but not well. Often we have to make small talk with complete strangers. . Here are some tips to improve your small-talking ability.

    ⒈

    If you have seen a really good movie or have read a really good book, you can talk about that.

   When you are sharing the same experience with someone, it's easy to start a conversation. You simply notice and comment on what's going on around you. For example, if you are at a party and a song comes on that you like or that reminds you of something, you can talk about that.

    ⒉Ask open-ended questions

    These types of questions require more thought and more than a simple one-word answer. , the conversation will go on longer.

    ⒊Become a student

    Nobody knows everything. So, as someone is answering one of your open-ended questions, they bring up something about which you know nothing. So, tell them! This lets the other person become the teacher. . It's a win-win situation.

    Like anything, getting good at making small talk takes practice. , you might become happier. If you are making small talk using English, you will most definitely improve your speaking and listening skills.

A. Have some conversation starters ready

B. If you make small talk in your native language

C. However, some people are not good at small talk

D. If you ask questions that need more details to answer

E. You can talk about something that you recently learned

F. Many people find these small conversations about random topics easy

G. They feel good about sharing their knowledge and you get to learn something

    I was late for the school bus and rushing to get ready. My dog, Tippy, got to the front door and lay down in front of it – his way of asking to be petted. I1his begging for affection (喜爱), hurdled(跨) over him and ran for the waiting bus.

    2, that afternoon, when I came home, Mom said to me3, "Honey, I have some4news that I need to tell you. This morning, while you were at school, Tippy was hit by a car and5 I'm so sorry."

    "No! It's not true!" I was6 I couldn't believe her. "Tippy, come here! Come on, boy!" I called and called for him. I waited. He didn't come. Feeling7, I wandered into the living room. I didn't cry that night. I still couldn't believe that he was8.

    When I got off the bus the next day, there was dead silence at home.9 my sobs (哭泣) bubbled up and erupted (喷发) like lava (熔岩) from a volcano. I couldn't stop10. I hadn't even petted him when I left.11could I have known that was my last chance? I cried until I felt empty inside.

    Time passed, and against my will, I started to12some things. I realized what little control any of us have over what happens 13 a dog. We can do everything right, but14things can still happen. But good things can happen too. That's15. The best way to 16 the hard times is to figure out what you need to do to get through them when they come, and to remember that hard times always17.

    I now deeply understand the "circle of life". Everyone is born, everyone18, and that's the way it is. If dogs never died, there would be no19for others like Belle – my new dog.

    Best of all, I realized that Tippy20all of my good memories of him. And they come to me every time I call!

—He        by many, yet I think        of him.

Few people can resist the lure (诱惑) of a delicious ice cream, especially on a hot day. The only thing that spoils the fun is that the treat is hard to enjoy slowly often ending up with a sticky, melted mess. Now, researchers from Colombia's Pontificia Bolivariana University may have found an unlikely partner to help solve this age-old problem- cellulose fiber (纤维素) extracted from banana plant waste.

Bananas, as you probably know, grow in bunches on a tree-like plant. Each bunch is attached to a central stalk, called a rahis (叶轴), which is thrown once the fruit has been harvested. The team, led by Dr. Rotin Zuluaga Gallego, began by extracting cellulose nanofibrils (CNs) from powdered rachis. The tasteless, odorless macro fibers, thousands of times smaller than the width of a human hair, were then added in various concentrations to 100 grams of ice cream mix.

With the right amount of CNFs mixed in, the dessert lasted longer in its frozen state than conventional ice cream, extending both its shelf life and the amount of time the treat can be enjoyed. Even more exciting was that the fibers increased the stickiness of low-fat ice cream to levels higher than the full-fat one. Since this is what determines the frozen treat's creaminess and texture, CNFs could help create healthier ice cream without compromising on taste.

The researchers, who presented their findings at the American Chemical Society (ACS) meeting in New Orleans on March 21, 2018, next plan to investigate how different types of fat, such as coconut oil, affect the behavior of CNFs in other frozen treats.

The Colombian researchers are not the only one working on creating a slower-melting ice cream. In 2015, scientists at the University of Dundee in Scotland found that a naturally occurring protein called BSIA (Bacterial Surface Layer A) was remarkably effective in keeping the treat frozen for longer periods of time. With both teams competing to be the first to get to market, the future of everyone's favorite dessert certainly looks promising.