500kV超高压送变电工程电磁辐射环境影响评价的初步评价报告书，以相关调查资料、（）

甲公司2011年5月17日以赚取价差为目的购入乙公司股票400000股，甲公司将其划归为交易性金融资产。该股票的购买价为每股5元，另支付相关交易费用7000元。甲公司应登记入账的交易性金融资产价值为( )元。

BUKHANNON, West Virginia—Two rescue teams slowly moved along a two-mile path on Monday night to the site of a coal mine explosion that trapped 13 miners, who had not been heard from since the early morning accident.

Meanwhile, at a nearby church, more than 250 family members and friends gathered, waiting for updates（最新报道）on the rescuers’ progress.

The miners were trapped at about 6:30 and many families weren’t informed of the accident until about 10 a.m-more than three hours after it happened. “It’s very upsetting, but you’ve got to be patient, I guess,” said John Helms, whose brother, Terry, was trapped in the mine.

The trapped miners were about 260 feet underground and about 10,000 feet from the Sago Mine’s entrance, said Roger Nicholson, general counsel from International Coal Group.

At a late night news conference, Nicholson said one team had advanced about 4,800 feet in the four hours since entering the mine just before 6 p.m. Another team entered the mine about 30 minutes later.

He said the crew was very experienced, with some members having worked underground for 30 to 35 years. The miners were equipped with about one hour of breathable oxygen each. The company has not released the names of the miners.

The teams test the air about every 500 feet, and have to disconnect (remove) the power to the phones they use to communicate with the surface before doing that. “We don’t want to be energizing anything if it’s in an atmosphere with burnable gases,” Kips said. The cause of the explosion was not immediately known. High levels of carbon monoxide were detected shortly after the explosion, which delayed rescue efforts, but those levels have since subsided（减退）, authorities said.

53. According to the passage, we can infer that ______.

A. all the miners who were trapped underground were still alive

B. communication with the trapped miners was cut off

C. the two rescue teams entered the mine at the same time

D. the rescue started as soon as the accident happened

54. If the first team advanced at an average speed, they could dig about ______ per hour.

A. 1,000 feet          B. 2,400 feet           C. 1,200 feet                D. 4,800 feet

55. Where can the passage be seen?

A. In a magazine.                                     B. In a newspaper.       

C. In a science book..                            D. On an advertisement.

56. Which of the following shows the position where the miners were trapped?

简述计算机系统的接地要求。

凡参加高处作业的人员，应（）进行一次体检。

A.每两年

B.每半年

C.每年

D.每季

患者，男，67岁，因腹泻次，呕吐6次于2005年8月入院。有糖尿病史，大便先为烂便，后水样便。无发热。腹痛，无里急后重，无咳嗽咳痰，尿量比平日明显减少。体查：心肺未见异常。皮肤弹性轻度减底，眼窝稍下陷，指纹稍皱。大便常规：未见红白细胞。血常规：血红蛋白158g/L，包细胞11.4×10⁹/L，中性0.78，淋巴0.20。根据题意，回答下列2题。

本病例最可能的诊断是()

A.细菌性痢疾

B.病毒性胃肠炎

C.急性细菌性胃肠炎

D.霍乱

E.阿米巴痢疾