MORE EXERCISES REVIEW UNIT 7 ENGLISH 9 TASK 1 : Odd sound out. 1. a. compare b. area c. many d. stamp 2. a. model b. solid c. solar d. profitable 3. a. bulb b. consumer c. plumber d. luxury 4. a. chopstick b. scheme c. champagne d. chair 5. a. recent b. efficient c. faucet d. receive 6. a. bulb b. plumber c. profitable d. label TASK 2 : Odd stress out. 1. a. accout b. compare c. conserve d. chopstick 2. a. faucet b. hobby c. household d. install 3. a. communicate b. effectively c. efficiency d. inovation 4. a. innovation b. separation c. installation d. environment 5. a. economic b. limitation c. reputation d. infrastructure 6. a. standard b. provide c. control d. amount TASK 3: Multiple choice. 1. We decided not to go out for meal …… we were too tired. a. but b. because c. so d. and 2. My shoes are dirty. I’d better take them …….b I come in. a. away b. up c. on d. off 3. If you want to save money, you should ……. the amount of water your family uses. a. increase b. reduce c. adapt d. prepair 4. In order to save electricity, an ordinary 100-watt light bulb can be replaced by ……. . a. a 1000-watt light b. a lamp c. an electric bulb d. an energy-saving bulb 5. Who is going to ……. your children when you’re at work? a. look for b. look up c. look after d. look out 6. Mary’s eyes are weak, …… , she has to wear glasses. a. but b. however c. and d. therefore 7. If there is a mechanical problem, we suggest ……. the manufacturer directly. a. contact b. to contact c. contacting d. be contacted 8. ……. put on the guests on the first floor? a. Why don’t we b. I suggest c. How about d. Let’s TASK 4: Read the passage, choose True or False. Many people still believe that natural resourrrces will never be used up. Actually, the world’s energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out alternative suorces of power. According to Professor Marvin Burnham of the New England Institute of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative. However, many people donot approve of using nuclear power because it’s very dangerous. What would happen if there was a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations. The most effective thing is that we should use natural resources as econo mical as possible. 1. Natural resources will never run out. 2. We don’t know exactly how much fuel is left. 3. We shouldn’t waste fuel. 4. According to Profeesor Marvin Burnham, solar energy will be used as a substitute for natural resources. 5. All people agree to use nuclear power as an alternative energy. 6. Radioactivity from nuclear power causes cancer and may have bad effect on the future generations. 7. Natural resources should be used as much as possible. Most of the world’s energy comes from the sun. The sun’s energy is in wood, oil, and other things that people use fer energy. ☻People use many sources of energy. Ancient people used only their arms, hands, and simple tools until they discovered fire. Later, people learned to use the energy of the wind to sail ships. Then they learned to use animals to do work. In the eighteenth and nineteenth centuries, people began to use machines. The first machines used steam. They burned coal to heat water. The hot water turned into steam, and the steam engine did the work. Later, people began to use the gasoline engine, and today people are using nuclear energy. Energy is one of the basic concepts, or ideas, of physics. It is the ability to do work. Without energy we could live. We need energy to work, and scientists are always looking for new sources of energy. 1. None of the world’s energy comes from the sun. 2. Wind, steam, and gasoline are sources of energy. 3. People have never used nuclear energy . 4. Energy is the ability to do work. 5. We need new sources of energy. TASK 5: Complete the passage. Are you looking (1)…….a cheap, clean, effective source of power that doesn’t (2) …… pollution or waste natural resources? Look no further than solar energy. While most fuels now iin use are (3)…… burned at an astonishing rate, solar energy, or power from the (4)…… , will last as long as the world (5)……. . This energy has already been (6)…… to heat and cool homes and to cook food. It has been used experimentally (7)…… radio batteries and in furnishing power for telephone lines. The devices, (8)…… , are cheap to operate but very expensive to produce. ( sun, however, lasts, for, cause, used, in, of, being, but) TASK 6: Write a passage about 80 words about saving energy to protect our environment. 1. Reducing garbage - collect plastic bag - not keep solid waste with food waste - put different kinds of waste in different places 2. Reusing paper - have a separate wastebasket for wastepaper - keep sheets with single printed page for drafting 3. Saving energy in the kitchen - turn off the lights - prepare food carefully before turning on the stove - keep refrigerator door closed . MORE EXERCISES REVIEW UNIT 7 ENGLISH 9 TASK 1 : Odd sound out. 1. a. compare b. area c. many d. stamp. are weak, …… , she has to wear glasses. a. but b. however c. and d. therefore 7. If there is a mechanical problem, we suggest ……. the manufacturer directly.