游戏中儿童通过模仿范例或对象（如司机）的一两个最富特色的典型角色动作（如转方向盘），

某公司开发的960件新产品，需加工后才能投放市场，现有甲，乙两个工厂都想加工这批产品，已知甲工厂单独加工完成这批产品比乙工厂单独加工完成这批产品多用20天，而乙工厂每天比甲工厂多加工8件产品．在加工过程中，公司需每天支付50元劳务费请工程师到厂进行技术指导．

（1）甲，乙两个工厂每天各能加工多少件新产品？

（2）该公司要选择省时又省钱的工厂加工，乙工厂预计甲工厂将向公司报加工费用为每天800元，请问：乙工厂向公司报加工费用每天最多为多少元时，才可满足公司要求有望加工这批产品．

It was Saturday when the entire summer world was bright and fresh. Tom looked at the fence, which was long and high, feeling all enthusiasm leaving him. He dipped his brush into the whitewash before moving it along the top board of the fence. He knew other boys would arrive soon with all minds of interesting plans for this day. As walking past him, they would tease him for having to work on a beautiful Saturday—which burnt him like fire.

He, putting his hands into his pockets and taking out all he owned with the expectation of letting someone paint, found nothing that could buy half an hour of freedom. At this dark and hopeless moment, a wonderful idea occurred to him, pouring a great bright light into his mind. He took up his brush and continued to work pleasantly with calm and quietness.

Presently, Ben Rogers came in sight—munching an apple and making joyful noises like the sound of a riverboat as he walked along. Tom went on whitewashing, paying no attention to the steamboat. 

“Hello!” Ben said, “I’m going swimming, but you can’t go, can you?”

No answer. Tom moved his brush gently along the fence and surveyed the result. Ben came nearer. Tom’s mouth watered for Ben’s apple while he kept painting the fence.

Ben said, “That’s a lot of work, isn’t it?”

Tom turned suddenly saying “Here you are! Ben! I didn’t notice you.”

“I’m going swimming,” Ben said. “Don’t you wish you could go? Or would you rather work?”

Tom said, “Work? What do you mean ‘work’?”

“Isn’t that work?”

Tom continued painting and answered carelessly, “Maybe it is, and maybe it isn’t. All I know is it suits Tom Sawyer.”

“Do you mean that you enjoy it?”

“I don’t see why I oughtn’t to enjoy it.”

“Does a boy have a chance to paint a fence frequently” said Tom.

Ben stopped munching his apple.

Tom moved his brush back and forth—stepped back to note the effect—added a little paint here and there. Ben watched every move, getting more and more interested, more and more absorbed1. After a short time, he said, “Tom, let me whitewash a little.”

Tom seemed to be thinking for a moment before he said, “No, Aunt Polly wants this fence to be perfect. If it was the back fence, maybe you could do it. But this fence beside the street is where everybody can see it. It has to be done right.”

“Oh, come on, let me try. I’ll be careful. Listen, Tom. I’ll give you part of my apple if you let me paint.”

“No, Ben, I’m afraid—”

“I’ll give you all the apple!”

Tom handed the brush to Ben with unwillingness on his face but alacrity in his heart. While the riverboat worked and sweated in the hot sun, Tom, an artist sat in the shade close by, munching his apple, and planning how he could trick more of the boys.

Before long there were enough boys each of whom came along the street; stopped to laugh but soon begged to be allowed to paint. By the middle of the afternoon, Tom had got many treasures while the fence had had three layers of whitewash on it. If he hadn’t run out of whitewash, he would have owned everything belonging to the boys in the village.

Tom said to himself that the world was not so depressing after all. He had discovered a great law of human action: in order to make a man cover a thing, it is only necessary to make the thing difficult to attain.

小题1:By using “Tom continued painting and answered carelessly”, the author shows Tom ______ when he was talking to Ben.

A．made mistakes

B．damaged things

C．was natural

D．wasn’t concentrating小题2:The underlined word “alacrity” in the last but two paragraph most probable means “______”.

A．kindness

B．discouragement

C．sympathy

D．eagerness小题3:Which of the following is TRUE according to the passage? ________

A．Tom did not want to go swimming at all

B．Tom was asked to help Aunt Polly paint the fence

C．Tom did not get along well with his friends

D．Tom was very busy that Saturday afternoon.小题4:We can draw a conclusion from the last paragraph that _______.

A．forbidden fruit is sweet.

B．a friend in need is a friend indeed.

C．all good things must come to an end.

D．a bad excuse is better than none.

下列各项，不属于亚急性重型肝炎并发症的是（）

A.脑水肿

B.消化道出血

C.血糖增高

D.电解质紊乱

E.严重感染

由麻醉面罩、接管形成的无效腔称（）

A.解剖无效腔

B.肺泡无效腔

C.解剖无效腔+肺泡无效腔

D.生理无效腔

E.机械无效腔

急性左心衰时发生肺水肿的原因主要是

A．心排出量减少
B．舒张压升高
C．收缩压降低
D．肺静脉压快速升高
E．前负荷增加