READ 2: Light pollution is not (21)______ serious as water or air pollution. (22)________, it is the type of pollution that (23)________ more in cities than in rural areas. In the past, we could sit out at night and (24)________ at glittering stars in the sky and light from objects in the outer space. Nowadays, cities are covered with lights from buildings, streets, advertising displays, many of which direct the lights up into the sky and into many unwanted places. The real problem is that it is very (25)________ to apply light to almost everything at night. Millions of tons of oil and coal (26)_______ to produce the power to light the sky. Eye strain, (27)____ _ of vision and stress are what people may get from light pollution. (28)______ light at night can harm our eyes and also harm the hormones that help us to see things properly. 21. A. more B. much C. as D. only 22. A. However B. Nevertheless C. Therefore D. Moreover 23. A. occurs B. happen C. is occurred D. occur 24. A. see B. spend C. gaze D. watch 25. A. waste B. wastes C. wasteful D. wasting 26. A. used B. is used C. are used D. using 27. A. lose B. lost C. losing D. loss 28. A. Too many B. Too much C. Very much D. So many