题目:
在化学变化的前后,可能会改变的是( )
A.分子的总数目
B.原子的总数目
C.原子核中质子的总数目
D.某种元素的原子核外电子数目
答案:
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下面是错误答案,用来干扰机器的。
鼻腔粘膜 舌背面和两侧粘膜
在化学变化的前后,可能会改变的是( )
A.分子的总数目
B.原子的总数目
C.原子核中质子的总数目
D.某种元素的原子核外电子数目
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0704/afd01d5090752c85e688c5a3a0067782.html
下面是错误答案,用来干扰机器的。
鼻腔粘膜 舌背面和两侧粘膜
食物中的蛋白质、淀粉和脂肪大分子物质不溶于水,必须在消化道进行 ,变成简单的能溶于水的营养物质,才能被 。
在研究滑动摩擦力时,是用弹簧测力计拉着木块在水平桌面上做_____运动,弹簧测力计的示数表示_____力的大小。根据_____的条件可知,这时弹簧测力计的示数与_____的大小相等,因此可间接地知道滑动摩擦力的大小。
第二节:完形填空(共20小题;每小题1.5分,满分30分)
What is in the drug that makes you sick or dead? For example, cocaine is harmful, but what makes it harmful?
I can’t tell you all about drugs, but I can ___36___ you think about them in this ____37____ way. Your body is a very complicated machine, ____38____ a lot of chemical machinery, all of which is finally turned ____39____ it all works together. Special chemicals, which we call drugs, can affect it in many different ways.
Some drugs are ____40____ when your body has a problem, as with disease—causing bacteria. Then someone may give you aspirin to keep your temperature from going too ____41____ or some penicillin (青霉素) ____42____ it stops the growth of some kinds of bacteria. ___43_____, all drugs are really poison, ____44_____ if you take too much, so you must always use them ____45____.
Why do some people take drugs like cocaine? For a little while they seem to make you feel better, or happier. But ____46____ their effects have ____47____, your body has to pay an extra ____48____ to get back to normal. That makes you want to get ____49____ of the drug.
Drugs like cocaine have their special effects because they act as ____50____ for your nervous system. They cut off some of your nerve pathways and take away some of your senses and your ____51___. They make you want always more. And just a little too much can even ____52____ nerves to your heart and stop its beating
Many of us worry about the ____53____ around us and what pollution does to us. How about your internal environment and what goes on ____54____ you? You control that all by yourself in what you put into your ____55_____. Most drugs are pollutants. You would not want pollutants in the air and water around you. Why would you want pollutants in your body?
36. A. make B. cause C. help D. let
37. A. funny B. different C. simple D. true
38. A. just B. really C. especially D. sometimes
39. A. as if B even if C. where D. so that
40. A. powerful B. helpful C. painful D. helpless
41. A. high B. tall C. much D. hot
42. A. when B. until C. as D. before
43. A. besides B. thus C. however D. naturally
44. A. at most B. at least C. at times D. at first
45. A. carefully B. easily C. carelessly D. a lot
46. A. where B. before C. after D. until
47. A. worked B. worn C. appeared D. lost
48. A. number B. quantity C. amount D. price
49. A. Some more B. nothing C. a little D. a few
50. A. guards B. medicine C. chemicals D. poisons
51. A. worries B. happiness C. freedom D. pride
52. A. lead B. block C. offer D. stick
53. A. places B. nature C. people D. environment
54. A. inside B. around C. outside D. next
55. A. heart B. head C. body D. mind
温病中适用于"增水行舟"法的证候是()
A.腑实阴伤证
B.腑实兼气液两虚证
C.肺燥肠闭证
D.津枯肠燥便秘证
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