We always think that it's OK for us to leave our plants home during our vacation as plants won't scream like pets, right?

    A recent study done by a group of scientists at the Tel Aviv University has discovered that some plants will scream when they are under stress.

    The research was carried out on tomato plants and tobacco plants by cutting their stems (茎) and depriving (剥夺) them of water. A microphone was placed 10cm away from them. When their stems were cut, the plants started "screaming" between 20 and 100 kilohertz, and the scientists guess that this scream is probably meant to warn other plants nearby.

    When the tomato plants' stems were cut, 25 ultrasonic (超声的) pain sounds were recorded in an hour, and at the same time, 15 ultrasonic pain sounds were recorded from the tobacco plants. When they were deprived of water, the tomato plants recorded even more pain sounds with 35 pain sounds in an hour while the tobacco plants recorded about 11 pain sounds.

    The plants also acted differently to different kinds of stresses. For example, the tobacco plants gave out a stronger "scream" when they were deprived of water than when their stems were cut. But plants that were in no immediate (立刻的) danger gave out less than one ultrasonic sound per hour.

    The group of scientists said that plants are not as quiet as we had always thought, but in fact their voices are so high-pitched that we just can't hear them.

    Last year, another study has found out that plants feel pain when they are touched or hurt and they will give off a terrible smell.

Chinatown is the name given to an area in the middle of London. It is a large Chinese community with a lot of Chinese restaurants, Chinese supermarkets and shops.

{#blank#}1{#/blank#} At the same time, the world rice market changed. And thousands of farm workers in Hong Kong lost their jobs. They began arriving in London to look for work. {#blank#}2{#/blank#}

These restaurant workers often worked 17 hours a day and had no time to learn English. As more Chinese arrived, more shops and businesses grew. Wives came and joined their husbands and children came and joined their fathers. {#blank#}3{#/blank#}

In the 1970s and 1980s, British-born Chinese started to have a better education. And this brought economic（经济的） success to the area. {#blank#}4{#/blank#} And there was more space for businesses. Chinatown soon became a popular place for tourists.

{#blank#}5{#/blank#} During the Chinese New Year, the streets are filled with flags and thousands of Chinese go into the streets. For most of the year, though, Londoners and tourists go there mainly for the food in the Chinese restaurants. The best restaurants are the ones where the Chinese eat.

A. Many families moved out of Chinatown.

B. Chinatown can be seen in different countries.

C. They found jobs in the restaurants in this area.

D. The community grew, and Chinatown was born.

E. Now everyone knows about London's Chinatown.

F. These young people don't like Chinese restaurants anymore.

G. In the 1950s, it was a poor area and everything was very cheap.

The winter vacation(假期) this year is coming soon. What do you want to do during the vacation? Do you want to watch TV? Do you want to play? {#blank#}1{#/blank#} I hope you can have a meaningful(有意义的) vacation. {#blank#}2{#/blank#}

About study

During the winter vacation, you will have a lot of free time for the three things. {#blank#}3{#/blank#} Second, study some new lessons of the next term. Third, do your homework for two hours a day.

About food

{#blank#}4{#/blank#} So you must eat some healthy food. When you see so much delicious food in the New Year, you must eat well. Please eat more green vegetables.

About sports

Eating is a good thing. {#blank#}5{#/blank#} Just go out and play sports with your family or friends for fun and health.

If you follow these good tips(提示), I believe you will have a great winter vacation.

Plastic pollution is one of the most serious environmental problems all over the world. Many countries are looking for ways to solve the problem. On November 7，2022，China started a"Bamboo instead of Plastic" project with the International Bamboo Organization. It will hopefully reduce plastic pollution. 

Bamboo is a plant of great value，such as cleaning air and preventing soil going away. Unlike trees which usually need a long time to fully grow，bamboo can be put into use in 3 to 5 years. As long as it is protected well

China is one of the countries with plenty of bamboo in the world. The Chinese are a pioneer in the use of bamboo. Zhejiang Province has set up companies to produce and develop bamboo products. Many of them have been sold to over 100 countries. China is also sharing its technology to help India and Japan，the countries which are rich in bamboo. It is hoped that countries around the world will work together for global green development. 

Xi'an celebrated the first-ever China Hanfu Day{#blank#}1{#/blank#} April 18. There were catwalk shows and traditional music concerts which {#blank#}2{#/blank#} by people wearing traditional Chinese clothing. Hanfu fans from all over China gathered there to take {#blank#}3{#/blank#} And they put them online for a Hanfu photo {#blank#}4{#/blank#}

China Hanfu Day is on the third day of the third month of the Chinese lunar calendar. In ancient China, this day was also {#blank#}5{#/blank#}as Shangsi Festival (上巳节). Its purpose is to encourage young Chinese {#blank#}6{#/blank#}pride in traditional clothing, as well as Chinese culture.

Hanfu is the traditional clothing of the Han people who lived in China before the Qing Dynasty It has a history of about 3,000 years and it {#blank#}7{#/blank#} greatly so far. However, some of {#blank#}8{#/blank#} main characteristics (特点) remain. For example, there are two parts that overlap (交叠) on the front which is called "jiao ling".

China is becoming a leading country in the world, and the Chinese people feel{#blank#}9{#/blank#} confident about its traditional culture than ever before. Wearing traditional clothing might be an interesting way of showing {#blank#}10{#/blank#} they feel about this.