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问题 选择题

下述实验中，不能达到预期目的的是（   ）                  

答案

答案：B

选项为B；将盐酸加入硝酸银溶液中生成白色沉淀是生成了不溶于稀硝酸的氯化银沉淀，而不能反映出硝酸的酸性与盐酸酸性强弱；

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Dear David,

I’m glad you would like to share your feelings with me．It’s hardly surprising that your feelings of not being “grown up” have come on strongly at this point in your life, just before you’re about to become a father．You are asking: Will I make a good father? How will I cope? I think nearly every man must have the occasional feelings of self-doubt and inadequacy before the birth．

It’s difficult, honestly, to feel grown-up unless you have something less grown-up to relate to．The boss with a hen-pecking wife may feel like a seven-year-old when he’s at home．But as he walks through the office door, and knows he’s going to be surrounded by staff for advice, he grows into a fully mature man．And I think it’s a mistake to imagine that we all feel, as we age, a kind of progress of states, from the baby to the adult．Most people feel, on Tuesday, about three years old, and on a Wednesday, around 80．

There’s a common remark that“all men are little boys”, but it’s not true．It’s more true that men often behave like little boys．But nearly all people, at some moments in their lives, are able to be greatly mature．．Once your baby arrives, you’ll soon feel less childlike．When your child tries to put its fingers into the electric plug, the adult in you will rise up to prevent it．

Comfort yourself, David, with two truths．One is that your friends laugh when they talk about this subject because they, like you, feel frightened．And remember that people who haven’t grown up don’t go around talking about the fact．

Good luck to you and your little one．

Sincerely Yours,

Miss Advice

小题1:According to the passage, Miss Advice thinks David’s self-doubt ________．

A．valuable

B．unusual

C．natural

D．bearable小题2:From Paragraph 2, we can learn that people’s sense of maturity ________．

A．will increase with age

B．is obviously seen at home

C．changes with different situations

D．becomes stronger with familiar people小题3:Miss Advice holds that ________．

A．all men behave like little boys

B．people tend to laugh at the subject

C．men with a baby feel more grown-up

D．people enjoy talking about their immaturity小题4:Miss Advice wrote the letter to ________．

A．offer suggestions to a future father

B．teach people how to grow up

C．encourage people to be responsible

D．solve problems of the less grown-up D
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单项选择题

Of all the areas of learning the most important is the development of attitudes. Emotional reactions as well as logical thought processes affect the behavior of most people.
"The burnt child fears the fire" is one instance. Another is the rise of despots like Hitler. Both of these examples also point up the fact that attitudes stem from experience. In the one case the experience was direct and impressive, in the other case it was indirect and cumulative. The Nazis were formed largely by the speeches they heard and the books they read.
The classroom teachers in the elementary school are in a strategic position to influence attitudes. This is true partly because children acquire attitudes from those adults whose opinion they respect.
Another reason is that pupils often delve somewhat deeply into a subject in school that has only been touched upon at home or has possibly never occurred to them before. To a child who had previously acquired little knowledge of Mexico, his teacher’s method of handling such a unit would greatly affect his attitude towards Mexicans.
The media through which the teacher can develop wholesome attitudes are innumerable. Social attitudes (with special reference to races and nationalities) science matters of health and safety, the very atmosphere of the classroom--these are a few of the fertile fields for the induction of proper emotional reactions.
However, when children come to school with undesirable attitudes, it is unwise for the teacher to attempt to change their feelings by cheating or scolding them. She can achieve the proper effect by helping them obtain constructive experiences. Finally, a teacher must constantly evaluate her own attitudes, because her influence can be harmful if she has personal prejudices. This is especially true in respect to controversial issues and questions on which children should be encouraged to reach their own decisions as a result of objective analysis of all the facts.

The word "harmful" in the last paragraph most probably means ______.

A. bad-affecting
B. ill-effective
C. widespread
D. irritating
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