Cruises are becoming more and more popular, with around 20 million passengers per year now enjoying holidays on board luxury ( 奢侈的 ) ships. More people see a cruise as the perfect way to sit back and do nothing, and enjoy time off work. But what is the effect on the environment of this trend?

    Although it usually takes less energy for a vehicle to move through water than over land, cruise ships are often massive, with the biggest ones carrying up to 6,000 passengers. Moving such large vehicles requires huge engines which bum as much as 300,000 litres of fuel a day. One scientist has calculated that cruise ships create as much pollution as 5 million cars going over the same distance. Because they are out at sea, they also burn dirtier fuel that isn't allowed on land. Unfortunately, no government has control over the amount of air pollution out at sea. Cruises also produce huge amounts of rubbish, and cruise ships aren't usually good at recycling. Waste water from showers and toilets is usually poured directly into the sea - as much per day as from a small town. Waste food from restaurants isn't put into the sea, but still causes problems when brought back to the land.

    Cruise ships also cause difficulties in the cities where they stop. Popular destinations can get five or six ships per day, with thousands of tourists at a time. Good for restaurants? No. Restaurant owners complain that the visitors look around for a few hours and then return to their ship to eat. What's more, the crowds can put off other tourists, who complain that the streets are too busy.

    Some towns have banned (禁止) cruise ships or put a limit on the number that can stop at the same time. People who care about the environment worry that as the cruise industry continues to grow, so will the issues for our planet.

①Our body language tells the world a lot about us. But can it change the way in which we see ourselves? The answer is Yes.

②Two scientists, Amy Cuddy and Danna Carney, who know much about body language, did a famous research. According to the result of their research, body language can change the chemistry of our brains. Some high-power body language can make you become confident. For example, you will feel confident when you hold your head high; you will feel confident too when you put your arms out wide as if you have won a race. However, some low-power body language can make you feel unconfident, such as sitting with your arms close to the body, sitting with your legs together or walking with your head down.

③Why do all these happen? The scientists think the reason is that body language changes the amount of something special in our brains. It's called hormone(激素). One kind of hormone can increase your confidence; another kind can increase your stress(压力). But too much stress hormone is bad for learning. It also increases the risk of health problems.

④The result of the research is helpful for your studies. Please remember: try to use more high-power body language in your studies, and you will be confident. That is, always believe you can study well, act as if you were doing well, then you will make greater progress in real life.

写作要点：1．饮食方面（如多吃蔬菜和水果等）2．运动方面（多做运动，如打篮球、跑步等）3．睡眠方面（确保充足的睡眠）4．其他方面（……）

注意：1．内容必须包含以上要点；2．可适当增加细节，以使行文连贯；3．文中不得透露个人信息。

参考词汇：make sure (确保)，enough (充足的)，a good mood (好心情)

How to be healthy

It's very important for us to stay healthy. We can do something to keep fit.

The 19^th Asian Games（亚运会）is held in Hangzhou, China this autumn. Many sportsmen come to the Games. They are from different{#blank#}1{#/blank#}in Asia. There{#blank#}2{#/blank#}three mascots（吉祥物）of the Hangzhou Asian Games. They are Chenchen, Congcong{#blank#}3{#/blank#}Lianlian. They are very cute and friendly. Everyone{#blank#}4{#/blank#}them. The sports gym looks{#blank#}5{#/blank#}a flower. It's beautiful, and it's{#blank#}6{#/blank#}big.

There are lots of games. I can watch{#blank#}7{#/blank#}on TV. My{#blank#}8{#/blank#}game is the men's skateboarding. The champion（冠军）is Chen Ye. Chen is from China. He is{#blank#}9{#/blank#}. He is 15 years old, and he is a{#blank#}10{#/blank#}in Huizhou. I am a student in Huizhou, too. I am so proud（骄傲）of him.

Scientists put a mother in one place. They put her two-year-old child in another place. There was a telephone line between them. Soon, the mother and child were talking to each other. The mother and child were dolphins.

In this experiment(实验), one of the two dolphins would make a sound. Then the other dolphin would make the same sound. Also, the scientists believed that the two animals knew who they were talking to.

Scientists have known for a long time that animals can "talk" with each other. But dolphins have some special ways of talking. They are very smart. When they are in a group, they "talk" to each other. They do this using different sounds. Dolphins not only use sounds to talk, they use body language too. They "tell" something to another dolphin by moving their body in an interesting way. They also do it by opening and closing their mouths quickly.

Scientists have listened to the dolphins' sounds, and they have watched the dolphins' behaviour. It's a pity that they don't know what the dolphins are saying. 

However, scientists have a strong hope of understanding dolphins' language...