美国经济学家约翰·梅尔认为，按照()的性质可将传统农业向现代农业的转变过程划分为三个

下列实验操作先后顺序正确的是（　　）

A．用KMnO₄制取收集氧气实验中，应先熄灭酒精灯，后把导管移出水槽

B．稀释浓硫酸时，应先在烧杯中盛水，后沿烧杯壁缓慢注入浓硫酸

C．CO还原CuO时应先加热，后通入CO

D．测定某溶液的pH时先用水润湿试纸，后把待测溶液滴到试纸上

The other day at the supermarket, I saw a naughty child of about six crying loudly, falling to the floor and refusing to move. All the while the troubled mother was trying to persuade him to behave well but failed. A little smack(掌击) on his bottom would have done the job, I thought.

Teenagers also cause discipline(纪律)problems. As a teacher I had a 16-year-old student who had fallen in love with a waiter at a fast-food restaurant. In fact, she had left home to stay with him. So we decided to put her in the school hostel. She refused. When she heard her mother begging her to stay in the hostel she turned round and said: “Why don’t you stay in the hostel if you like it so much?”

My palms were itching to slap her for being so rude but the poor mother continued to cajole her, hoping that gentle persuasion would work wonders. It did not. I last heard that she had run away from home again.

The list goes on and on. Could it be that today’s parents are softer and believe that they must not rod (棍棒惩罚)their children for fear of the bad result? Or do they actually believe that the children will get rid of the bad habits and behave well naturally as they grow older? I beg to disagree. I believe it is the parents’ duty to discipline the children even at a young age.

My children who are now adults will prove the fact that I used the rod when I thought it necessary. Later when they went abroad, they related to their British university friends on how they were disciplined. Their friends abroad were filled with horror and told my daughter that I could be charged for child abuse(虐待). However, my daughter showed great respect for me when she told them that she would not be where she was today if not for my strict discipline.

48. According to the passage, the author would probably_______.

A. beat the children every day      B. punish the children when necessary

C. 1eave the children as they are         D. treat the children in a softer way

49. The underlined word “cajole”(in Paragraph 3) probably means________.

A. persuade       B. scold          C. forgive         D. punish

50. Which of the following is TRUE according to the passage?

A. The naughty boy’s mother hit him on the bottom at last．

B. The teenager’s mother lived together with her daughter in the school then．

C. The author was charged for child abuse by her daughter’s friends abroad．

D. The author’s daughter was very thankful for her parent’s strict discipline．

51. Which of the following can be the best title of this passage?

A. Respect Parents    B. Spoil Kids    C. Value Discipline  D. Protect Kids

特殊竞争力

在工程项目开工前约定的时间内，( )必须完成施工组织设计的编制及内部自审批准工作，填写“施工组织设计(方案)报审表”报送项目监理机构。

A．承包单位
B．建设单位
C．监理单位
D．设计单位

因严重违反《传染病防治法》及有关法律规定，按照《刑法》规定，下列哪种违法犯罪行为可被判处3年以下有期徒刑或拘役，并处或单处罚金（）

A.引起甲类传染病传播或有传播危险的

B.引起乙类传染病传播或有传播危险的

C.从事传染病防治工作的人员严重不负责任，导致传染病传播流行的

D.违反国境卫生检疫规定，引起检疫传染病传播或有传播严重危险的

E.从事实验、保藏传染病菌种、毒种的人员违反国家规定，造成传染病菌种、毒种扩散，后果严重的