“房抵贷”用途包括（）。 A.购买商用房 B.购买商用车 C.出国留学 D.购买汽车

如图所示为磁流体发电机的原理图：将一束等离子体喷射A磁场，在场中有两块金属板A、B，这时金属板上就会聚集电荷，产生电压如果射入的等离子体速度均为v，两金属板的板长为L，板间距离为d，板平面的面积为S，匀强磁场的磁感应强度为B，方向垂直于速度方向，负载电阻为R，电离气体充满两板间的空间。当发电机稳定发电时，电流表示数为I。那么板间电离气体的电阻率为

A.

B.

C.

D.

Watson entered Mr. Smith’s office. The Boss was a hard man. He fired people who didn’t do well without giving them a second chance.

“Watson,” said Mr. Smith, “this past year your department hasn’t earned money. We’re going to drop that department. It’s finished. I’ m sorry, —but you’ll have to go.” “But, sir—if I just had a little more time. For the moment I need the job to keep my son at Riverside School.”

“What’s that!” said the Boss. “Riverside! I didn’t know you had a boy there. That’s an expensive school for a man with your salary.”

“I know, sir. But he likes it there so much! He’s a star trackman（田径运动员） and the best boxer in the school. The boys call him Champ（冠军） there.”

The Boss sat perfectly still for a long time—a faraway （恍惚的） look in his eyes. Then, suddenly, he said, “We’ve got to close your department, Watson. But you’ll take over a new job in another department. It means longer hours—maybe more pay. Now get out. You’re here for life.”

Watson got out, with surprise in his face. Then the Boss took a letter from the top drawer of his desk. It was Herbie’s last letter from Riverside School —written a few days before he died. He had read it over and over again with sick pain. The letter read: I can’t say the boys here are any nicer to me than the others were. I guess it’s the same everywhere when you’re a cripple (跛脚的人). But don’t worry about me, Dad. They’ve got a good chemistry department here. And there’s one boy here who is really great. He’s a track star and boxing champ and just tops in chemistry. The boys call him Champ. He made them stop throwing my books around. And he knocked a boy down who hit me. He is the best friend I ever had. Dad, when I grow up, I want to do something for Champ. Something big—that he won’t even know about.

Your son,   Herbie

小题1:The underlined word “drop” in paragraph 2 could best be replaced by ________.

A．fall

B．close

C．punish

D．sell小题2: It can be inferred from the text that Champ is_______.

A．Watson’ s son

B．Mr Smith’ s son

C．a teacher of Mr Smith’s son

D．the son of Mr Smith’s friend小题3:From the text we know that Herbie_______.

A．was a college student

B．didn’t live to grow up

C．made friends with many boys

D．died from a car accident小题4:Watson was given a second chance because_______.

A．Mr Smith wanted to help Watson’s son

B．a man was needed in another department

C．Herbie told Mr Smith to do so in his letter

D．Mr Smith wanted to realize his son’s dream

在挣值法的评价指标中，表示进度提前的是( )。

A．CV＞0

B．SV＞0

C．CPI＜1

D．SPI＜1

如图标志的含义是表示前方300米道路封闭。

对肠易激综合征病人，下列有关腹痛的描述，错误的是______

A．部位不定
B．腹痛部位为右下腹
C．极少睡眠中痛醒
D．多于排便或排气后缓解
E．无明显体征