问题
选择题
下列是日常生活中发生的一些变化，其中都属于化学变化的一组是[ ]
A. 水蒸发、纸张燃烧
B. 酒精挥发、光合作用
C. 牛奶变酸、铁锅生锈
D. 玻璃打碎、草莓榨汁
答案
答案：C
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下列是日常生活中发生的一些变化，其中都属于化学变化的一组是[ ]
A. 水蒸发、纸张燃烧
B. 酒精挥发、光合作用
C. 牛奶变酸、铁锅生锈
D. 玻璃打碎、草莓榨汁
答案：C
One weekend afternoon I toured an art museum while waiting for my husband to finish a business meeting．I was looking forward to a quiet 36 of the splendid artwork． A young 37 viewing the paintings ahead of me 38 nonstop between themselves．I watched them a moment and decided the lady was doing all the talking．I admired the man's 39 for putting up with her 40 stream of words． 41 by their noise, I moved on． I met them several times as I moved 42 the various rooms of art．Each time I heard her continuous flow of words, I moved away 43 . I was standing at the counter of the museum gift shop making a 44 when the couple approached the 45 ．Before they left, the man 46 into his pocket and pulled out a white object．He 47 it into a long stick and then 48 his way into the coatroom to get his wife's jacket． "He's a 49 man, " the clerk at the counter said．" Most of us would give up if we were blinded at such a young age．During his recovery, he made a promise his life wouldn't change．So, as before, he and his wife come in 50 there is a new art show．" "But what does he get out of the art?" I asked．"He can't see．" "Can't see! You're 51 ．He sees a lot．More than you and I do," the clerk said．"His wife 52 each painting so he can see it in his head．" I learned something about patience, 53 and love that day．I saw the patience of a young wife describing paintings to a person without 54 and the courage of a'' husband who would not 55 blindness to change his life．And I saw the love shared by two people as I watched this couple walk away, their arms intertwined．
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