牛津版（深圳·广州）2017-2018学年初中英语七年级下册Module 3 Units 5-6 综合检测

—This evening.

—OK. No problem.

—How about having a rest first?

—Because the question was difficult and I needed more time to work it out.

—Wow! It's beautiful.

—Six hours. But it will take much longer if the road is crowded.

—Please don't add anything to my tea.

—Can you hear what they are saying?

—Well, she is right _______.

—You need to change a new one.

—So the people here can make good use of _______.

—Because they are the judge of scientific (科学的) "truth".

—_______. I saw her at the doctors this morning.

    Living on Earth is like living in a terrarium (玻璃容器). All the water on 1 has always been here. The water never goes away and new water is never created. You might say the water is 2. Yes. Water changes its form as it moves through the 3 cycle, from liquid (液体) to solid, then to gas. The cycle happens all over again and again. The water cycle 4 to purify (净化) the water. However, once the soil and air are polluted, it is harder for the water to get clean.

    More than 70％ of the human body is water. Next to oxygen, water is the most 5 part of our life. We drink water. We bathe and shower in water. Each person 6 about 70 gallons of water each day.

    Out of all the water on Earth only 1％ is flesh water. We can all help protect water by doing things like 7 the tap when we brush our teeth.

    Water can get polluted by many different things. Sometimes it 8 when people are careless with the chemicals. Every year thousands of people get sick from 9 water. So everyone must work together to 10 water clean. Our lives depend on it!

    In 2001, a l4-year-old boy named William had a little wish. He loved reading. He wanted a light in his room so that he could read after dark. His big idea came while he was reading a book in the library. He saw a picture of a windmill (风车) and decided to make one.

    When he started building the first windmill in 2002, people thought he was crazy. But they all came to see his creation made from broken PVC pipes and old car and bicycle parts. He dreamt of using wind to produce electricity. Later he built two more windmills in his home town, the 60-person village in Malawi. Africa.

    William wants to build windmills across Malawi, and perhaps beyond. Money to help with this project has come from all over the world, including China.

    Every day new Inventions appear on the market. In recent years, a "talking pillow (枕头)"has been on sale in the UK. It has a speaker (扬声器) that can be connected to an MP3 player or a CD player. People can listen to music or radio programmes from their pillows when they sleep.

    The pillow is popular with people who have a snoring (打呼噜的) partner. It can play music to cover the sound of the snoring. In a way, it is helpful for people to keep a good relationship.

    The pillow is the most popular with students. Why? Because they prefer to listen to lessons before they sleep. They hope they will remember at least some of the information when they wake up.

    A US study shows students who receive information during sleep can remember what they learn. But some teachers don't like the new idea. They think the traditional ways of learning may help students learn better.

    Can your body work like batteries? Scientists have found a way to make power. They use nothing but movement of the human body.

    According to a team of scientists from Georgia, America, anything from walking to a standing heartbeat can produce certain energy. Then it will be caught and used by the nanogenerators (纳米发电机). The nanogenerator at a meeting of the American Chemical Society, showed how a small chip (芯片) with millions of small wires could use the human heart to make power. The wires are 500 times thinner than a human's hair. The scientists used a nanogenerator to provide power for a light and a LCD screen.

    Any kind of body movement can be used to produce power, and nanowires can also make electricity when wind blows，car runs and so on. It is not new, but scientists are trying to make it perfect.

    Scientists believe it has a future. "While a few volts (伏特) may not seem like much, it has grown fast, "said the project's lead scientist, Zhong Lin Wang (Z. L. Wang). According to him, if more nanowires and more nanogenerators are put together, they can produce enough energy for powering larger electronics, such as an ipod or a cell phone.

    Each day in the United States, one person uses about 575 litres (公升) of water. In Japan, one person uses about 374 litres of water.  in Kenya, one person uses only about 20 litres.

    Tomoyuki Tsutsui and Keitaro Kakoi are  (Japan) university students. They raised money online to help people in Kenya. They wanted  (they) to drink clean water. Tsutsui lives in Kisumu, Kenya. He lives in a house without running water, also  (call) tap water. He knows  difficult it is to live with little water. Most people cannot have water  (easy) because there is no tap water in their houses. So, it's hard  them to get water. They carry a tank (箱) of 20 litres three  (time) a week. It is very heavy.

    Some residents (居民) can't go to northern Kisumu for water because it is too far. They must use rainwater or buy it from the shop.

    Tsutsui and Kakoi have a lot of money  (solve) these problems now.  company is laying a water pipe from northern Kisumu. When they finish the work, the residents of southern Kisumu will get water without travelling a long way.

Save water