有些动物（如青蛙）在冬天要进行冬眠，这是
A．繁殖后代的需要
B．寻找食物的需要
C．太困了的原因
D．适应寒冷气候的结果
答案：D
题目分析：生物必须适应环境才能生存，如在沙漠上植树必须种植耐旱树种沙棘，沙枣才能容易成活，若种植需水较多的水莲在很难成活，有些动物如青蛙在冬天要进行冬眠，变温动物体温随着环境温度而变化，冬天温度低，冬眠可以避免因温度过低而冻伤甚至冻死，因此青蛙在冬天要进行冬眠是变温动物对冬季寒冷环境的一种适应。
An elderly carpenter(木匠) was ready to retire. He told his boss his plans to 1 the business and live a more relaxed life with his wife. He would miss the pay, but he needed to retire. The boss was 2 to see his good worker go, and asked if he could build just one more house as a personal favor. The carpenter said yes, 3 it was easy to see that his heart was not in his work. He used poor skills and 4 materials. It was an unfortunate way to 5 his career. When the carpenter finished his work, the boss came to 6 the house. After he checked it out, he handed a 7 to the carpenter. “This is your house,” he said. ‘It is my gift to you.” What a shame！If he knew he was building his own house, the old man would have done it all so 8 . So it is with all of us. Think of your life as a 9 . Each day you hammer a nail(钉子), place a board, or set up a wall. You must try your best to build the house wisely because it is the only life you will ever have. Your life tomorrow will 10 from the attitudes you choose today. 小题1:.
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