问题 单项选择题 A1/A2型题

腹外疝最重要的发病原因是()

A.慢性咳嗽

B.长期便秘

C.排尿困难

D.腹壁有薄弱点或腹部缺损

E.经常从事导致腹腔内压增高的工作

答案

参考答案:D

解析:腹外疝发病原因有腹壁强度降低和腹腔内压力增高两大因素。正常腹壁具有一定强度,即使在腹腔内压力增高的情况下亦不致发病。一旦腹壁强度降低,疝即形成。因此腹壁强度降低是主要病因,腹腔内压力增高只是一种诱因。而选项A、B、C、E均可使腹腔内压力增高,是诱因;选项D是腹壁强度降低的常见原因,故选D。

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Foods from Around the World

Foods that are well known to you may not be familiar to people from other countries. Here are four people’s experiences with foreign food.

Shao Wong is a student in France. He comes from China. “I’d never tasted cheese or even milk before I came here. Cattle are rare in my part of China, so there are no dairy products. I tried milk when I first arrived in France. I hated it! I sampled cheese too, but couldn’t manage more than one bite. I love ice cream, though, and that’s made from milk.”

Birgit is from Sweden. She traveled to Australia on vacation. “I was in a restaurant that specialized in fish, and I heard some other customers order flake. So I ordered some too and it was delicious. Later, I found out that flake is an Australian term for shark. After that pleasant experience, whenever I see a new food I try it out on purpose. You know why? I remember how much I enjoyed flake.”

Chandra is a dentist in Texas. She originates from India. “I’m frightened of eating new foods because they might be made from beef. I’m a Hindu, and my religion forbids me to eat meat from the cow. It’s a sacred animal to Hindus, so that’s the reason I can’t eat hamburgers or spaghetti with meatballs.”

Nathan is American. He taught for a year in China. “My friends gave me some 100-year-old eggs to eat. I didn’t like the look of them at all. The insides were green, but my friends said the color was normal. The Chinese put chemicals on fresh eggs. Then they bury them in the earth for three months. So the eggs weren’t really very old. Even so, I absolutely refused to touch them.”

Life in a new country can be scary, but it also can be fun. Would you sample a 100-year-old egg? Would you order shark in a restaurant?

56. Which of the following sentences is true about Shao Wong?

A. He is a French – Chinese.

B. Cattle are seldom raised in his hometown.

C. He doesn’t like any diary products.

D. He didn’t taste cheese because he hated it.

57. What kind of girl is Birgit?

A. Religious.     B. Brave. C. Confident.   D. Open- minded.

58. Chandra is frightened of eating food made from beef, because _________.

A. It’s against Hindus’ religion.

B. She is a doctor and she thinks beef is not easy to chew and digest.

C. She is an Indian.

D. Hindus think beef is not tasty.

59. The underlined word “Sacred” in paragraph 4 means _________.

A. frightening  B. large    C. man – eating        D.greatly respected

60. What can you infer from this passage?

A. Foods that are well known to you may not be familiar to people from other countries.

B. Despite (虽然) cultural differences in food, have a try and maybe you’ll get used to it.

C. A vacation is a good way to learn about new foods. Be sure to go on vacation more   often.

D. People dislike eating new foods only because their religion forbids it.