等质量的镁和锌分别放置在两只烧杯中,向其中分别逐滴加入质量分数相等的稀硫酸到过量

题型:选择题

问题:

等质量的镁和锌分别放置在两只烧杯中,向其中分别逐滴加入质量分数相等的稀硫酸到过量,下图正确的是(  )

A.

B.

C.

D.

考点:金属活动性化学反应方程式的计算
题型:选择题

在我们的成长过程中每个人都会遇到很多不如意、不顺心的事,有的是学习成绩不理想,有的是跟同学相处不融洽,有的经常和父母闹别扭,有的是愿望总不能实现……

(1)以上材料说明了什么道理?

________________________________________________________________________________

(2)在你的学习、生活中遇到或听说过类似的问题吗?请你列举3例。

________________________________________________________________________________

(3)如果你的好友遇到了此类问题一蹶不振时,你会如何帮他走出困境?

________________________________________________________________________________

题型:选择题

在1956年,上海的天气很热,企业为了不影响生产,采取用风扇、鼓风机来降温的措施。但要经过十一个部门的审批,要盖十一个图章,等最后的图章盖完,夏天已经过去了。以上材料说明  [ ]

A.计划经济下企业没有主动权

B.企业能充分发挥积极性、创造性

C.有利于节约资源

D.促进了生产力的发展

题型:选择题

阅读理解。

     It is not unusual at all for teens to answer their parents with one-word answers. "Where are you going?"

"Places." "When will you be back?" "Sometime." "Who will you be with?" "People."

     That means that the days of your children bounding in the front door with the details of their day are over.

They are breaking away from you so that they'll be able to stand on their own as a young adult.

     Some parents feel sad about this loss of their children's closeness. Of course you miss those conversations

and friendly talks. Once your children move out after high school and establish themselves confidently as a

young adult, they'll come back for easy conversations and even ask for advice. But in order to determine who

they are right now they need to separate from you.

     Your job, however, is to keep them safe-and that requires knowing where they are and who they are with.

Let them know clearly that it's not because you want to dominate their life and control them; it's because it's

a safety issue for family members to keep track of one another.

     When they're home and sit down to eat a meal, sit down with them. You need to open up to them about

your life. Tell them of an interesting incident at the office, let them in on a bit of family gossip (闲谈), discuss

a piece of news with them. They are glad that you see them as old enough to be in on a few experiences of

your life. By letting a teen in on your life, they just may let you in of theirs.

1. The underlined word "That" in Paragraph 2 probably refers to "_____". [ ]

A. teens no longer tell parents their detailed information

B. teens don't tell parents where they had been any more

C. parents are impatient to listen to their children

D. parents are occupied by doing their business

2. It can be inferred from the passage that _____.

[ ]

A. the generation gap is becoming wider and wider

B. teens quarrel a lot with their parents

C. teens don't want to live with other family members

D. some parents feel distant from their teenage children

3. The author believes that teens' one-word answers show _____. [ ]

A. their awareness of independence

B. their physical and mental changes

C. an unpleasant parent-child relationship

D. their wishes for keeping silent

4. What's the main idea of the last paragraph? [ ]

A. Parents should understand their children.

B. parents should keep their children safe.

C. Parents should open their hearts to their children.

D. Parents should give their children enough freedom.

5. What's the author's purpose in writing the passage? [ ]

A. To give advice

B. To direct teenagers

C. To present findings

D. To comfort parents

题型:选择题

链球菌感染后急性肾小球肾炎的主要治疗措施是

A.休息和对症抗炎
B.激素和免疫抑制剂
C.限制钠盐和水摄入
D.抗凝剂
E.利尿剂

题型:选择题

霍布豪斯在《自由主义》一书中说:“19世纪可被称为自由主义时代,但是到了这个世纪的末叶,这项伟大运动却大大地衰落了。”导致自由主义“大大衰落”的主要原因是()

A.自由主义导致了无政府思想的泛滥

B.19世纪五六十年代的资产阶级通过改革加强了统治

C.欧洲封建势力对拿破仑战争的胜利

D.第二次工业革命导致了垄断组织的产生

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