第1题:
chemicals are not necessary for preserving food
a small quantity of bacteria in food is good to people
those chemicals that kill bacteria may not be good to people
there are other better ways to preserve food
第2题:
11 and under
12 and under
12 and over
18 and over
第3题:
第4题:
第5题:
第6题:
The design.
The price.
The color.
The size.
第7题:
第8题:
第9题:
第10题:
在当今世界,社会受到局部或全面损坏的程度还是难以确定的。
在当今世界,对社会所造成的任何局部或整体损害都依然未被察觉。
在当今世界,对社会的任何损坏,无论是局部的还是全球性的,终究会被察觉出来。
第11题:
第12题:
car-renting services in the US
a special rate of car-renting
the advantages of car-renting
a US car-renting company
第13题:
第14题:
第15题:
第16题:
第17题:
Types of Doctors in the United States
Health Care in the United States and Britain
Treatment of Sick Children in the United States
Medical Insurance in the United States and Britain
第18题:
第19题:
第20题:
第21题:
beginning
finishing
first
final
第22题:
第23题:
第24题:
not until
as long as
the moment
only if