问题 单项选择题 A1/A2型题

患者,女性,20岁,孕15周,超声发现胎儿无脑畸形,其声像图表现是()

A.羊水少

B.颅骨光环显示不全,眼球突出呈"蛙头"状

C.双泡征

D.肠管扩张

E.心率快

答案

参考答案:B

解析:无脑儿是神经管缺陷的最严重类型,系前神经孔闭合失败所致。主要特征是颅盖骨及双侧大脑半球、小脑及覆盖颅骨的皮肤缺如,但面骨、脑干、部分枕骨和中脑常存在。常伴有脊柱裂及羊水过多。眼球突出呈"蛙头"状。

阅读理解

A winter wonderland on the outskirts of Quebec City has become one of Canada's hottest attractions and most sought out accommodations. Guests stay close for warmth in sleeping bags on beds of ice, hats pulled over their ears to prevent frostbite, while sipping cocktails (鸡尾酒) in glasses also made of ice.

A cool place to host a memorable wedding or for a romantic getaway, the Quebec Ice Hotel has attracted 600,000 curious tourists, including 30,000 who stayed overnight, since opening seasonally 11 years ago. Like Victoria and Jeremy Martin, dozens of couples will exchange vows (誓约) this winter in a temporary church next to the hotel, made entirely from blocks of ice with seats covered in furs.

Average temperatures fall below minus 20 degrees C (minus four F) in winter, but inside the hotel's 36 rooms it is relatively comfortable. Thick walls of packed snow and ice act as an insulator, trapping body heat inside. Each room is uniquely decorated, using designs created by Quebec architecture students. Two hotel bars also sell special cocktails in ice glasses.

First-time guests of the hotel, however, are recommended to stay only one night as sleeping in sub-zero temperatures is not very refreshing. This year for the first time the ice hotel has teamed up with a brick and concrete Quebec City hotel to offer packages(全套服务) for one-night accommodations at each. Prices for one night only at the ice hotel start at 200 US dollars per person.

The 3,000-square-metre (32,300-square-feet) buildings take six weeks starting in December to build, using 15,000 tons of snow and 500 tons of ice, at a cost of some 750,000 US dollars. Eleven weeks after its seasonal grand opening, the hotel will close on March 27 and then melt away with the arrival of spring.

小题1:What is true with the ice hotel?

A.630,000 people have visited it.

B.Its rooms all look alike.

C.It stays open for two months each year.

D.Wedding ceremonies are often held there.小题2:The underlined word “insulator” in Paragraph 3 possibly refers to something that ______.

A.stops heat passing through it

B.collects and reflects light and heat

C.makes things become very cold

D.works like an air-conditioner小题3:First-time guests are advised to stay there only one night because _______.

A.they may not be able to stand the cold

B.their other night is with an ordinary hotel

C.new guests have no advantages over old ones

D.they may find the beds made of ice too hard to sleep on.

单项选择题