问题 单项选择题

属于I期内痔特点的是()

A.无痔核脱出

B.便时痔核能脱出肛外,便后能自行还纳

C.便时痔核经常脱出肛外,不能自行还纳

D.痔核即脱出肛外,手托亦常不能复位

E.痔核经常位于肛外,易感染

答案

参考答案:A

解析:

内痔分期 (1)I期内痔无明显自觉症状,痔核小,便时粪便带血,或滴血,量少,无痔核脱出,镜检痔核小,质软,色红。 (2)Ⅱ期内痔周期性、无痛性便血,呈滴血或射血状,量较多,痔核较大,便时痔核能脱出肛外,便后能自行还纳。 (3)Ⅲ期内痔便血少或无便血,痔核大,呈灰白色,便时痔核经常脱出肛外,甚至行走、咳嗽、喷嚏、站立时也会脱出肛门,不能自行还纳,须用手托、平卧休息或热敷后方能复位。 (4)Ⅳ期内痔平时或腹压稍大时痔核即脱出肛外,手托亦常不能复位,痔核经常位于肛外,易感染,形成水肿、糜烂和坏死,疼痛剧烈。

阅读理解

Air travel chaos across Europe caused by the volcanic eruption in Iceland continued Sunday, impacting tourists and business people's schedules and causing economic loss to Chinese airlines and tourism agencies.

Air China canceled five one-way flights and eight return flights to European cities including Paris, Frankfurt and Moscow Sunday, according to a notice on its website. "The cancellation was due to closure of most European airports, and we will keep a close eye on the latest situation, "said Zhu Mei, an Air China spokeswoman.

Other carders including China Southern Airlines, China Eastern Airlines and Hainan Airlines have also canceled most flights to Europe, according to the Civil Aviation Administration of China.

Airlines worldwide are losing at least $200 million per day in revenue, the International Air Transport Association said Friday.

Tourism agencies have been affected too. "This is the first time we met such a natural disaster, and we can only wait and keep in contact with our tourists," said Hun Ping, an employee on duty at China International Travel Service's(CITS) branch in Beijing Sunday. "We have a group of more than 30 Chinese tourists who were scheduled to fly to Paris from Beijing around noon Sunday and their flights will be postponed to tomorrow at the earliest," she said. Hun said another group of Chinese tourists in Europe, who will fly back to Beijing from Brussels Wednesday, might also be affected by the incident. "The possible delay will not add to tourists' financial burdens, as we will share our tourists' additional expenses with the airlines," she said.

1. How many flights has Air China canceled?

A. 8         B. 9           C. 13           D.15

2. What does the word "chaos"(bold in para. 1) mean in the passage?

A. disorder         B. incidents       C. closure      D. damage

3. Which of the following statements is True?

A. The air travel chaos in Europe has caused great losses to only air carriers.

B. The direct reason for the flight cancellation is the closure of most European airport.

C. The International Air Transport Association is suffering a huge loss of $200 million per day.

D. Air China and other Chinese air carriers have already canceled all their flights to Europe.

4. Which of the following is the most suitable title for this passage?

A. Flights Cancellation Caused by Volcanic Eruption

B. The Effects of Volcanic Eruption in Iceland

C. The chaos caused by Volcanic Eruption

D. Tourism Disaster Owing to Volcanic Eruption

单项选择题