2008年北京奥运会吉祥物--“福娃”向世界传递着友谊、和平、积极进取的精神。为儿童安全考虑，有一种“福娃”的外用材料为纯羊毛线，内充物为无毒的聚酯纤维。下列说法正确的是
A.羊毛的主要成分为纤维素
B.这种“福娃”不宜用碱性强的洗涤剂清洗
C.聚酯纤维是天然材料
D.可以用燃烧的方法区分羊毛和聚酯纤维
BD
| 题目分析： |
| 选项A羊毛的主要成分是蛋白质，不是纤维素，故A错误； |
| 选项B“福娃”的外用材料为纯羊毛线，不能用碱性强的洗涤剂清洗，故B正确； |
| 选项C聚酯纤维是人造材料，故C错误； |
| 选项D羊毛燃烧时有烧焦羽毛的气味，而聚酯纤维没有，所以可以用燃烧的方法区分羊毛和聚酯纤维，故D正确。 |
| 故选：BD． |
| 完形填空。 | ||||
| In the depths of my memory, many things I did with my father still live. These things come to represent, in fact, what I call 1 and love. I don't remember my father ever getting into a swimming tool. But he did 2 the water. Any kind of 3 ride seemed to give him pleasure. 4 he loved to fish; sometimes he took me along. But I never really liked being on the water, the way my father did. I liked being 5 the water, moving through it, 6 it all around me. I was not a strong 7 , or one who learned to swim early, for I had my 8 . But I loved being in the swimming pool close to my father's office and 9 those summer days with my father, who 10 come by on a break. I needed him to see what I could do. My father would stand there in his suit, the 11 person not in swimsuit. After swimming, I would go 12 his office and sit on the wooden chair in front of his big desk, where he let me 13 anything I found in his top desk drawer. Sometimes, if I was left alone at his desk 14 he worked in the lab, an assistant or a student might come in and tell me perhaps I shouldn't be playing with his 15 . But my father always 16 and said easily, "Oh, no, it's 17 ." Sometimes he handed me coins and told me to get 18 an ice cream… A poet once said, "We look at life once, in childhood; the rest is 19 ." And I think it is not only what we "look at once, in childhood" that determines our memories, but 20 , in that childhood, look at us. | ||||
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