问题 单项选择题 A1/A2型题

蠕形螨的感染方式主要是通过 ()

A.虫卵污染食物或饮水经口

B.媒介昆虫叮咬

C.直接接触或间接接触

D.污染注射器经输血

E.经皮肤

答案

参考答案:C

解析:人体蠕形螨可通过直接或间接接触而传播。预防感染,要尽量避免与患者接触,不用公共盥洗器具,毛巾、枕巾、被褥等物要勤洗勤晒。因此本题最佳答案是C。

阅读理解

阅读理解。

     Each term. Andrew Tom receives a term bill, tuition (学费), student center recreation fee, resident activity

fee, health insurance. If only the rest of his expenses were as easy to quantify (确定数量).

     "It' s like you start out the term With plenty of money and then $ 20 for dinner out here and $100 at the

department store there, it' s gone," said Tom, a third-year student."And there are so many daily necessary

things that you don' t think about until you get there and need it."

     From the books to the fashionable clothes, college students say~ the expenses of a college education go

well beyond tuition and a dining hail meal plan. Many say they arrive on campus only to be frightened by

unexpected costs from sports fees to the actual price of a slice of pizza.

     Balancing a job with schoolwork, especially at colleges known for their heavy workloads like Harvard and

MIT, can be tough. So can the pressure that students of- ten feel in order to financially go along with their

friends.

     "When you get dragged along shopping, you're going to spend money; if you, get dragged to a party and

everyone wants to take a taxi but you are cheap and wantto take a bus, chances are you' 11 end up sharing

the fee for the taxi," said Tom."Iguess you could say no, but no one wants to be the only one eating in the

snack bar while our friends are out to dinner."

      Max Cohen, a biology major at MIT, said he is used to watching fellow students spend $ 40 a night to

have dinner delivered or $ 50 during a night out at a bar. During the school' s recent spring break, friends on

trips for the week posted away messages that read like a world map-Paris, Rome, Tokyo."Meanwhile I

stay at home and work," said Cohen."I didn't realize when I came here how much money I would spend or

how hard I would have to work to get by."

     It is a lesson some younger students learn quickly. Others, surrounded by credit card offers, go into debt,

or worse, are forced to leave school. 

     "A lot of people don' t think twice about how much they spend," said a first year student at M1T,"and you

feel the pressure sometimes to go along with them."

1. What do we learn from the first two paragraphs?

A. The tuition in the college is very high.

B. Andrew Tom should reduce the budget (预算).

C. It' s easy to quantify how much will be spent each term.

D. The cost of college education is much higher than expected.

2. The underlined word "cheap" in Paragraph 5 means _______.

A. inexpensive

B. unwilling to spend money

C. valueless

D. low in price and quality

3. What can be inferred from the passage?

A. Students have to work hard to pay their tuition.

B. Most students have heavy loads in their studies.

C. Many students are under great financial pressure.

D. Students depend on their families for all the expenses.

4. According to the writer, what causes the high costs for college students?

A. Lack of budget.

B. The school' s overcharging.

C. The high prices of daily necessary things.

D. Financially going along with each other.

单项选择题