细辛最适合治疗下述哪项病证（） A.外感风寒，麻疹不透 B.外感风寒，表虚有汗 C.

如图所示，一质量为m的质点在半径为R的半球形容器中（容器固定），由静止开始自边缘上的一点滑下，到达最低点B时，它对容器的正压力N。重力加速度为g，则质点自A滑到B的过程中，摩擦力对其所做的功为

A．

B．

C．

D．

瞳孔的大小是由动眼神经的__________和颈上交感神经节的__________共同调节的。

电能表的基本误差是以（）误差表示的。

A.绝对

B.相对

C.引用

D.随机

We have two daughters: Kristen is seven years old and Kelly is four. Last Sunday evening, we invited some people home for dinner. I dressed them nicely for the party, and told them that their job was to join Mommy in answering the door when the bell rang. Mommy would introduce them to the guests, and then they would take the guests' coats upstairs and put them on the bed in the second bedroom.

The guests arrived. I introduced my two daughters to each of them. The adults were nice and kind and said how lucky we were to have such good kids.

Each of the guests made a particular fuss over Kelly, the younger one, admiring her dress, her hair and her smile. They said she was a remarkable girl to be carrying coats upstairs at her age.

I thought to myself that we adults usually make a big "to do" over the younger one because she's the one who seems more easily hurt. We do it with the best of intentions.

But we seldom think of how it might affect the other child. I was a little worried that Kristen would feel she was being outshined. I was about to serve dinner when I realized that she had been missing for twenty minutes. I ran upstairs and found her in the bedroom, crying.

I said, "What are you doing, my dear?"

She turned to me with a sad expression and said, "Mommy, why don't people like me the way they like my sister? Is it because I 'm not pretty? Is that why they don't say nice things about me as much?"

I tried to explain to her, kissing and hugging her to make her feel better.

Now, whenever I visit a friend's home, I make it a point to speak to the elder child first.

56．The underlined expression ' make a big "to do" over' (paragraph 4) means ______.

A．show much concern about              B．have a special effect on

C．list jobs to be done for                 D．do good things for

57．The guests praised Kelly for carrying coats upstairs because of her ______.

A．beautiful hair                         B．pretty clothes

C．lovely smile                          D．young age

58．Kristen felt sad and cried because ______.

A．the guest gave her more coats to carry

B．she didn't look as pretty as Kelly

C．the guests praised her sister more than her

D．her mother didn't introduce her to the guests

59．We can conclude from the passage that ______.

A．parents should pay more attention to the elder children

B．the younger children are usually more easily hurt

C．people usually like the younger children more

D．adults should treat children equally

60．Which of the following saying is right?

A．Kristen and Kelly are not getting along with each other.

B．Kristen is older than Kelly.

C．The mother likes Kristen more than Kelly.

D．People usually talk more to Kelly than they do to Kristen.

整体式凹模的优点与缺点分别是什么？它适用于什么样的模具？