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【简答题】
阅读理解。 Thomas Edison was a famous American scientist. He was born in 1847. When he was a child, he liked to find out how things worked. He was in school for only three months. He asked his teacher a lot of strange questions, Most of them had nothing to do with his lessons. The teacher thought the boy was not bright and was not worth (值) teaching. When he told this to Edison's mother, she took her son out of school. As she had been a teacher, she taught him herself. The boy read a lot. Soon he became very interested in science. At the age of ten, Edison had already built a chemistry lab (实验室) for himself. Ever since then, he never stopped searching (探索) for new and better ways to do things. 1. Edison was born in the _____  century ( 世纪). A. eighteenth B. nineteenth C. nineteen D. eighteen 2. While he was in school, Edison _____  . A. studied his lesson very hard B. was often late for school C. liked to ask questions D. was not bright and enough to study 3. Edison learned more from _____ . A. his mother B. his teacher C. other boys D. his father 4. Young Edison was interested in _____  . A. sports B. playing games C. making trouble D. science 5. He was always searching for new and better ways to do things after he _____ . A. read books B. finished school C. built a lab D. was taken out of school
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【简答题】淀粉遇碘变 色。
【多选题】膳食调查的方法有 。
A.
24 小时回顾法
B.
食物频率问卷法
C.
称重法
D.
查账法和化学分析法
【单选题】在鉴定淀粉存在时,常用碘液,这是因为(  )
A.
有机物遇碘变成蓝色
B.
淀粉遇碘不变色
C.
淀粉遇碘变成蓝色
D.
淀粉遇碘不变蓝色
【简答题】淀粉遇碘变色,请简述在酸或淀粉酶存在下颜色变化,及原理。
【多选题】膳食调查的方法有:
A.
称重法
B.
记账法
C.
膳食回顾法
D.
化学分析法
【多选题】膳食调查的方法有
A.
称量法
B.
查账法
C.
24小时回顾法
D.
化学分析法
【简答题】直链淀粉遇碘变______色,支链淀粉遇碘变_____色。
【多选题】膳食调查的方法有
A.
称重法
B.
人均动物性食品消费调查
C.
食品深加工比值评价法
D.
查账法
E.
回顾问询法
【单选题】下列估测值最接近生活实际的是
A.
人骑自行车的平均速度约为0.5 m/s
B.
中学生的质量约为200 kg
C.
初中物理课本的宽度约为18 cm
D.
日光灯正常工作的电功率约为1 000 W
【多选题】膳食调查的方法有
A.
询问法
B.
24h回顾法
C.
称重法
D.
生化法
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