在学校教育中，教师最主要、最基本的职责是（）。 A.培养能力 B.传授知识 C.依法

金属产生断裂的种类有（）和延伸断裂（或称韧性断裂）。

Mark and his brother Jason both were looking at the shining new computer enviously, Jason was determined not to go against their father’s wishes but Mark was more adventurous than his brother. He loved experimenting and his aim was to become a scientist like his father.

“Dad will be really mad if he finds out you’ve been playing with his new computer.” Jason said, “He told us not to touch it.”

“He won’t find out,” Mark said. “I’ll just have a quick look and shut it down.”

Mark had been scolded before for touching his father’s equipment. But his curiosity was difficult to control and this new computer really puzzled him.

It was a strange-looking machine — one his dad had brought home from the laboratory where he worked. “It’s an experimental model,” his father had explained, “so don’t touch it under any circumstances.” But his father’s warning only served to make Mark more curious. Without any further thought, Mark turned on the power switch. The computer burst into life and seconds later, the screen turned into colors, shifting and changing and then two big white words appeared in the centre of the screen: “SPACE TRANSPORTER.” “Yes!” Mark cried excitedly, “It’s a computer game. I knew it! Dad’s only been pretending to work. He’s really been playing games instead.” A new message appeared on the screen: “ENTER NAMES

VOYAGER 1:…

VOYAGER 2:…”

Mark’s fingers flew across the keyboard as he typed in both of their names.

“INPUT ACCEPTED. START TRANSPORT PROGRAM. AUTO-RETRIEVE INITIATED (自动回收程序已启动).”

The screen turned even brighter and a noise suddenly rose in volume.

“I think we’d better shut it off, Mark,” Jason yelled, reaching for the power switch. He was really frightened.

But his hand never reached the switch. A single beam of dazzling white light burst out of the computer screen, wrapping the boys in its glow(光芒) , until they themselves seemed to be glowing. Then it died down just as suddenly as it had burst into life. And the boys were no longer there. On the screen, the letters changed.

“TRANSPORT SUCCESSFUL. DESTINATION (目的地)：MARS. RETRIEVE DATE: 2025.”

小题1:Why did Mark touch the computer against his father’s warning?

A．He wanted to take a voyage.

B．He wanted to practice his skill.

C．He was so much attracted by it.

D．He was eager to do an experiment.小题2:Where did the boys’ father most likely work?

A．In an electronic factory.

B．In a computer company.

C．In a scientific research center.

D．In an information processing center.小题3: Mark thought “SPACE TRANSPORTER” on the screen was the name of______.

A．a computer game

B．a company website

C．a software producer

D．an astronomy小题4:Why did Jason want to shut off the computer?

A．He was afraid of being scolded.

B．He didn’t like the loud noise and light.

C．He didn’t want to play games any more.

D．He was afraid something dangerous might happen.小题5: What happened to the boys at the end of the story? 

A．Theywereblownintotheair.

B．Theyweresenttoanotherplanet.

C．Theywerehiddeninthestronglight.

D．Theywerecarriedawaytoanothercountry.

你知道"空中指挥所"是什么吗？

阶级矛盾和统治阶级内部矛盾的不可调和性，是警察产生的( )

A．政治条件

B．经济条件

C．阶级条件

D．文化条件

B市李某经营一家旅行社，预计月营业额在2500～4000元之间，当地税务局规定的起征点为3000元。考虑城市维护建设税和教育费附加，那么节税点的营业额为( )。

A．3174.59元
B．3157.88元
C．3092.77元
D．3102.37元