符合高血钾心电图表现的是（）。 A.T波高耸，基底部狭窄，呈帐篷型T波 B.u波倒置

64的立方根为_______.

HARTLAND, Wis. (AP) — Lauren Panos was surprised when she walked into her ninth-grade English class in the fall and saw there were no boys.

Her parents had not told her they had enrolled her in a new all-girls class at Arrowhead High School in Hartland. Panos still isn't sold on the idea.

"All the girls there, they can talk out of turn," the 14-year-old said. "We are bored of tasks and it's really upsetting."

More public school systems are looking at separating boys and girls, whether for certain classes or by total schools, after the federal government opened the door last fall. Supporters say separating students by sex helps them learn better and allows boys and girls to explore subjects they may not otherwise take.

"Boys just make a bigger trouble in the class," Panos' classmate, Alyson Douglas, 15, said “I likes not worrying about boys causing disruptions.”

Presently, nationwide, at least 253 public schools offer single-sex classes and 51 schools are entirely single sex, according to the National Association for Single Sex Public Education. In1995, just three public schools offered single-sex classes.

Critics of same-sex classrooms argue that proven methods of improving education should be carried out instead of one that divides boys and girls.

"Too many schools feel they can carry out a social experiment with students' education with really the weakest of theories," said Emily Martin, deputy director of the American Civil Liberties Union's Women's Rights Project.

Single-sex schools are an "illusionary(错觉的) silver bullet," said Lisa Maatz, director of public policy and government relations for the American Association of University Women. They distract(分散) from real problems and do not offer proven solutions such as lower class sizes and enough funding, she said.

"I would suggest that for many of our kids and families, especially in Milwaukee, it's a question of choice," Spence said. "We have a series of choices in Milwaukee and I just think this should be one additional choice."

66．What surprised Lauren Panos was that_______ when she walked into the class.

A．her classmates were all boys.          B．her classmates were all girls.

C．the boys were all absent from class.     D．she went into the wrong class.

67．From what Panos said we can learn that ______.

A．Panos thinks that the idea is very good for they can talk freely.

B．Panos doesn’t accept the fact that girls in her class have to finish many tasks.

C．Panos doesn’t like the idea that boys and girls are in separate classes.

D．Panos prefers to study in a class in which there are only boys.

68．The underlined word “disruptions” in the fifth paragraph most probably means ______.

A．trouble         B．danger   C．interest        D．happiness

69．Critics don’t support the idea of single-sex schooling mainly because_______.

A．boys will cause more trouble and girls will hate studying.

B．single-sex schooling that is not a proven idea can leave out key problems

C．it doesn’t help students develop fully and healthily

D．it can excite students to explore the unknown

70．The passage is probably taken from_________.

A．a newspaper                   B．a magazine   

C．a book of education          D．A TV programme

甲状腺显像诊断最有独特价值的适应证是()

A．甲亢的确诊

B．甲状腺炎的鉴别

C．甲状腺癌的判定

D．甲状腺瘤的判别

E．异位甲状腺的定位判断

根据《个人所得税法》规定，2008年3月，若个人收入超过( )元，应缴纳个人所得税。

A．800

B．1 000

C．1 600

D．2 000

农业银行采用（）确定无形资产的使用寿命。

A.法定寿命与经济寿命孰低法

B.法定寿命与经济寿命孰高法

C.法定寿命

D.经济寿命