阿司匹林（结构简式如图）又名乙酰水杨酸，推断它不应具有的性质 [ ] A．与Na 发布时间：2017-06-06 20:19 │ 来源：www.tikuol.com 题型：选择题 问题： 阿司匹林（结构简式如图）又名乙酰水杨酸，推断它不应具有的性质[ ]A．与Na2CO3反应B．与金属钠反应 C．与乙酸发生酯化反应 D．与乙醇发生酯化反应
题型：选择题 完形填空 Here is a story about a clever dog. It. was a guide dog. A guide dog can help blind people walk alongthe streets and do many other things. One day a guide dog and a blind man 1 on a bus together. The bus was 2 of people and there were 3 vacant (空的) seats. Soon one man stood up and left his seat. The dog 4 the blind man to the seat, but there was 5 space for both of them. The dog began to push the people on each side with his nose. He pushed and pushed 6 the people moved and finally there was enough space for 7 people. The blind man then sat down and the 8 got up on the seat at his side. The dog lay down and put his head on the blind man's lap. He was very comfortable and soon fell a sleep. Every one on the 9 couldn't help 10 at the dog.( )1. A. got ( )2. A. 1ell ( )3. A. no ( )4. A. told ( )5. A. a few ( )6. A. up to now ( )7. A. many ( )8. A. dog ( )9. A. seat ( )10.A. smile B. went B. fill B. some B. asked B. not any B. up till now B. two B. people B. floor B. smiles C. took C. full C. several C. letting C. not enough C. until C. few C. man C. car C. smiling D. had D. feel D. many D. took D. not enough of D. to the finally D. one D. woman D. bus D. a smile 查看答案
题型：选择题 下列关于算法的说法中正确的个数是（ ）①求解某一类问题的算法是唯一的；②算法必须在有限步操作之后停止；③算法的每一步操作必须是明确的，不能有歧义或模糊；④算法执行后一定产生确定的结果．A．1B．2C．3D．4 查看答案
题型：选择题 偷捕、抢夺他人养殖的水产品的，或者破坏他人养殖水体、养殖设施的，责令改正，可以处（）万元以下的罚款，造成他人损失的，依法承担赔偿责任，构成犯罪的，依法追究刑事责任。A.1B.2C.5D.10 查看答案
