What do we learn about the list？
A. The man has it.
B. It's been thrown into the waste paper basket.
C. It's in a book.
查看答案
As is well-known, the higher we go above the earth, the ______ air we have.
A. rarer
B. rare
C. rarest
D. more rare
What is the woman looking at？
A. Pictures of the trains from Boston to New York.
B. A map of New York.
C. A timetable.
How long will Tim stay in London？
A couple of months.
B. One year.
C. Several weeks.
What is true of the past definitions of happiness？
A. They were based on self-gratification.
B. They varied greatly.
C. They were based on lifestyles.
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