问题 单项选择题

胆固醇结石形成的最主要原因是()

A.胆汁成分改变

B.胆道感染

C.饮食习惯

D.胆道内蛔虫残体存留

E.胆道梗阻

答案

参考答案:A

填空题
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     Cassandra Feeley finds it hard to manage on her husband's income.So this year she did

something more than a hobby(业余爱好):She planted vegetables in her yard.For her first

garden,Ms.Feeley has put in 15 tomato plants,and five rows of a variety of vegetables.The

family's old farm house has become a chicken house,its residents arriving next month.Last

year, Ms.Rita Gartin kept a small garden.This year she has made it much larger because,she

said,"The cost of everything is going up and I was looking to lose a few pounds,too;so it's

a winwin situation all around."

   They are among the growing number of Americans who,driven by higher living costs and a

falling economy(经济),have taken up vegetable gardening for the first time.Others have

increased the size of their existing gardens.Seed companies and garden shops say that not

since the 1970s has there been such an increase in interest in growing food at home.Now

many gardens across the country have been sold out for several months.In Austin,Tex.,some

of the gardens have a threeyear waiting list.

   George C.Ball Jr.,owner of a company,said sales of vegetable seeds and plants are up by

40%over last year,double the average growth of the last five years.Mr.Ball argues that some

of the reasons have been building for the last few years.The big one is the striking rise in the cost

of food like bread and milk, together with the increases in the price of fruits and vegetables.Food

prices have increased because of higher oil prices.People are now driving less,taking fewer

vacations,so there is more time to garden.

1.What does the word "residents" in Paragraph 1 probably refer to?

A.chickens      

B.tomatoes

C.gardens      

D.people

2.By saying "a winwin situation all around",Ms.Gartin means that________.

A.she is happier and her garden bigger

B.she may spend less and lose weight

C.she is selling more and buying less

D.she has grown more varieties of vegetables

3.Why is vegetable gardening becoming increasingly popular?  

A.More Americans are doing it for fun.

B.The price of oil is lower than before.

C.There's a growing need for fruits.

D.The cost of living is on the rise.

4.Which of the following might be the best title for the text?

A.Family Food Planning    

B.Banking on Gardening

C.A Belttightening Move  

D.Gardening as a Hobby