7 cefr(Multilevel) Reading Part Practice Tests Designed by A. J
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17 CEFR(Multilevel) Reading Part 1 practice tests
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- TEST-2 ACID RAIN
17 CEFR(Multilevel) Reading Part 1 Practice Tests Designed by A.J For more, feel free to text me https://t.me/Mr_AJ98 Visit my channel: https://t.me/CefrMockTests TEST-1 BIOLOGICAL CLOCK It was long ago noted that 1)_________plants open and close at different times of the day. In fact, in the 19th century they used to make gardens in the shape of a 2) _________face with different times. It was possible to tell the 3) ________just by looking at this 'flower clock'. No one really understands why 4)________open and close at particular times, but recently some interesting experiments have been done. In one, flowers were placed in a laboratory in constant darkness. One might predict that those flowers, not having any information about the day, would not 5)______, as they usually do. But in fact they continue to open as if they were in a normal 6) __________. This suggests that they have some mysterious way of keeping time. They have, in other words, a kind of 'biological clock' TEST-2 ACID RAIN Acid rain is now a familiar problem in the industrialized countries in Europe. Gasses like sulphur dioxide and nitrogen oxide are produced by power stations and cars. The 1)________ dissolve in rainwater, and this makes the acid 2)______, which damages trees, rivers and streams. Acid rain is also capable of 3)___________ some rocks and buildings made of soft rock, such as limestone, are particularly affected. The acid rain attacks the 4) ________ , and so carvings and statues are eroded much more quickly. Scientists estimate the rate of wear to be about a millimeter of stone every twelve years. That's enough to have caused some of the ancient 5) _________to become seriously damaged already. Download 0.72 Mb. Do'stlaringiz bilan baham: |
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