《世界遗产公约》的宗旨，是依照现代科学方法，建立一个永久性的有效制度，共同保护具有历

把下面长句改写为短句，使意思表达得更为清楚。(4分)

现在许多国家都已经能够生产独立操作机床，可以在病房细心照料病人，可以在危险区域进行作业的机器人。

患者男，25岁，3年前出现上腹痛，餐后可缓解，有午夜饥饿痛，反复发作。6小时前进食后突然出现中上腹刀割样痛。体格检查：T37.9℃，P102次／分，R20次／分，BP90/65mmHg，神志清楚，皮肤巩膜无黄染，双肺未闻及干湿性啰音，心脏体检无异常。腹壁紧张，全腹有压痛及反跳痛，肝浊音界消失，移动性浊音可疑，肠鸣音减弱。

为明确诊断，应紧急检查哪些项目？（）

A.血清淀粉酶

B.肝炎病毒免疫学检查

C.血常规

D.电子胃镜

E.腹腔穿刺

F.腹部B超

G.X线钡餐检查

H.X线胸片

I.腹部立位平片

"scrolling" is a technique most commonly associated with __( )__.

A．disk

B．display

C．printer

D．memory

The demand for oil is more inelastic in the short-run than the supply of oil, but it is not perfectly inelastic. Based only on this factor, if the government imposes a $ 5.00 per barrel tax on oil producers :（）

A. The incidence of the tax will fall most heavily on oil producers, because the tax is imposed directly on them.

B. The incidence of the tax will be split between oil producers and oil consumers, with most of the tax being paid by oil producers.

C. The incidence of the tax will be split between oil producers and oil consumers, with most of the tax being paid by oil consumers.