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问题 单项选择题 A1型题

最易发生嵌顿的腹外疝是（）

A．腹股沟斜疝

B．腹股沟直疝

C．脐疝

D．股疝

E．切口疝

答案

参考答案：D

填空题

2011年为国际化学年，主题是“化学---人类的生活，人类的未来”．

（1）下列是与人类的生活与未来密切相关的物质：A．甲烷；B．酒精；C．石油；D．氢气．选择相应的编号填空．

①        是实验室常用的燃料 

②          可以提供清洁、高效的氢能

③                   是天然气的主要成分 

④               经过加热分馏可得到汽油、柴油、石蜡等

（2）下列是可用于人工降雨的物质：A．干冰；B．液液氮；C．碘化银（AgI）．选择相应的编号填空．

①属于单质的是             

②属于氧化物的是              

③属于盐的是             ．
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阅读理解
阅读理解。

     Experience the newly opened Grand Canyon (大峡谷) West Skywalk in Colorado. Departing from Grand Canyon's South Rim by Airplane to Grand Canyon's West Rim, you will land and take a ground tour to the Skywalk! Walk on air for 70 feet over the edge of Grand Canyon West.
     This Skywalk has been open since March 28, 2007. Daily visitorship to the Skywalk has been over 4,000 people. Please be patient to enjoy your moment on the Skywalk.
     After you have experienced the one and only Grand Canyon Skywalk Glass Bridge, you will return to the Grand Canyon West Airport and take your Airplane for a flight back to the South Rim of the Canyon. This is a tour never to be forgotten as you will have walked on air over the Grand Canyon.
Tour Itinerary (行程)
Tour Duration5.7 HoursThe Grand Canyon Adventure Skywalk
Flight from Grand Canyon
South Rim to Grand
Canyon West		1 HourExperience a bird's-eye view of the Grand
Canyon as you make your way to Grand
Canyon West.
Light Lunch at Guano
Point at Grand Canyon West		2 HoursYou'll be taken by bus to Guano Point with
breathtaking views of the western part of
the Grand Canyon where the Calorado River
makes its way into Lake Mood. Every table
for lunch has a view.
Walk on the World
Famous Skywalk		1.5 Hours Finally you'll board your bus to Eagle Point,
home of the Grand Canyon Skywalk. Now
it is time for you to walk on air for 70 feet
over the Grand Canyon.
Flight Back to Grand
Canyon South Rim		1.2 HoursAfter time on the Skywalk, you'll return to
the Grand Canyon West Airport and return to Grand Canyon
South Rim in time for dinner and sunset.
1. This advertisement is for __________.
 A. Grand Canyon West
B. Grand Canyon South
C. Grand Canyon
D. the Skywalk
2. The package fee does NOT cover the cost of _______.
3. The Grand Canyon Skywalk Bridge is made of glass because ______.
A. it looks stranger
B. it is cheaper to build
C. it looks more beautiful
D. it gives you a better view
4. According to the Tour Itinerary, the route is ______.
A. South Rim→Guano Point→West Airport→Eagle Point→West Airport→South Rim
B. South Rim→West Airport→Guano Point→Eagle Point→West Airport→South Rim
C. South Rim→West Airport→Eagle Point→Guano Point→West Airport→South Rim
D. South Rim→West Airport→Eagle Point→West Airport→Guano Point→South Rim
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