Read the passage then choose the best answer to fill in each gap.
The human …….. (1) is only one small species in the living world. Many ……. (2) species exist on this planet. However, human beings have great influence on the rest of the world. ………..(3) are changing the environment by building cities and villages where forests once stood. They are …………(4) the water supply by using water for industry and agriculture. They are changing weather conditions by cutting down trees in the forests, and they are destroying the air by adding ……….. (5) to it.
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.
Holidays are rich in old traditions and are (1) _______in Scotland, Ireland, Wales and England. Christmas is a great English (2) _______ holiday, and in Scotland it is not kept at all, except by clerks in banks; all the shops, mills and factories are working. But six days later, (3)_______ New Year’s Eve, the Scots begin to enjoy themselves. People invite their friends to their house (4)_______ “sit the old year out and the new year in”. When the clock begins to strike, the head of the family (5)_______to the front door, opens it wide, and holds it until the last stroke. Then he shuts the door. He has let the old year out and the New Year in.
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
Coal, oil, and natural gas supply modern civilization (1)............. most of its power. However, not only are supplies of these fuels limited, but they are a major source of pollution. If the energy demands of the future are to be met without seriously harming the environment, existing (2)........energy sources must be improved or further explored and developed. These include nuclear, water, solar, wind, and geothermal power, as well as energy from new, (3)........... types of fuels. Each of these alternatives, however, has advantages and disadvantages.
Nuclear power plants efficiently produce large amounts of electricity without polluting the atmosphere; however, they are costly to build and maintain, and they pose the daunting problem of what to do with nuclear wastes. Hydroelectric power is (4)........ and environmentally safe, but impractical for communities located far from moving water. Harnessing energy from tides and waves has similar drawbacks. Solar power holds great promise for the future but methods of collecting and concentrating sunlight are as yet (5).........., as are methods of harnessing wind power.