下列实验操作不当的是（ ） A．将烧杯放在电子天平上调零后，再将烧碱放入烧杯中称

In every school there is “top” crowd that sets the pace, while the others follow their lead. For example, if the crowd decides that it is smart to wear bright red sweaters, then very soon everybody is wearing bright red sweaters.

There is nothing wrong with that, except the fact that for some people bright red sweater is really unsuitable.

The situation can even become dangerous, if the top crowd decides that it is smart to drink and to drive cars at seventy miles an hour. Then the people who follow the lead are endangering their lives. They are like the sheep being led to the slaughter(屠杀).

Now it’s possible that you have come across situations like these more than once in your life. In fact you probably did something you knew to be wrong one time or another. You may have excused yourself by saying, “ Gee, the crowd does it.” Well, let the crowd do it, but don’t do it yourself. Learn to say “No”.

Develop your own standards(标准)and your own judgment. If you know the crowd is planning something you disagree to, you’d better take the courage to bow out in a polite way. You’ll have the satisfaction of standing on your own two feet.

小题1:The main idea of the passage is that _____________ .

A．in every school there is a “top” crowd that sets the pace

B．it’s a mistake to follow the “top” crowd blindly

C．people who follow the “top” crowd are endangering their lives

D．you probably did something wrong more than once in your life小题2:The author(作者)doesn’t think it good wearing red sweaters if _______.

A．the crowd is wearing them

B．you can't afford them

C．you don't look good in red

D．it is against school rules小题3:The writer encourages the readers to ___________ .

A．respect his or her parents

B．find excuses when he or she is wrong

C．learn to stand on their own two feet

D．take the advice of his or her elders小题4:What does the underlined phrase “bow out” in the passage probably mean?

A．鞠躬

B．退出

C．参与

D．应允小题5:The best title for this passage is __________ .

A．Follow the Leader

B．The “Top” Crowd

C．Being Yourself

D．Rules for Teens

以下哪些选项与肾有关（）

A.毛

B.骨

C.主蛰

D.精之处

E.阴中之太阴

诚实、勇敢、谦虚、细心等词语描述的是一个人在对现实的稳定的态度和习惯化了的行为方式中表现出来的人格特征，即（）。

S1字节的第5~8比特表示ITU-T的不同时钟级别，S1的值越大，表示的时钟级别越高。

男，31岁。B超可见肾上盏结石0.6cm，经解痉，中西药治疗和大量饮水现出现尿频，尿急，尿痛，现结石的位置应在

A．肾盂
B．输尿管中段
C．膀胱
D．输尿管膀胱入口段
E． * *