52. Lilian could get a higher education when she was old because ________.

　　A. she borrowed money from the bank

　　B. her husband and children helped her

　　C. her classmates encouraged her to get it

　　D. the reason isn’t mentioned in the passage

　　Ｄ

　　As a result of pollution, Lake Erie, on the borders of the USA and Canada, is now without many living things.

　　Pollution in water is not simply a matter of “poisons” killing large numbers of fish overnight. Very often the effects of pollution are not noticed for many months or years because the first organisms (生物体) to be affected are either plants or plankton (浮游生物). These organisms are the food of fish, birds, and other creatures. When this food disappears, the fish and birds die too. In this way a whole food chain can be wiped out, and it is not until dead fish and water birds are seen at the river’s edge or on the sea shore that people realize what is happening.

　　Ｅ

　　How do you think of the following example? Many Japanese never take the vacations they should enjoy, but with the coming of “Golden Week”, several holidays following one after another in late April and early May, they pour out of the country in the tens of thousands.

　　So when traveling, whether on business or for pleasure, the first thing to think about are hotels. The kind of hotel you choose is decided according to how much money you want to spend. There are small hotels with very few services, where the prices are low, or there are large hotels with all the very latest comforts, where you could spend all the money you have in the bank for a very comfortable night.

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