Which of the following can best give the main idea of the second paragraph？
A. Cambridge has a long history.
B. Many students lacked money, so colleges were set up then.
C. The town was built before the university.
D. It was cheaper for students to live in college than in lodgings.
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One of the reasons why men invented certain sounds to express thoughts and actions was that______.
A. they could write them down
B. they could agree on certain signs
C. they could communicate with each other
D. they could combine them
They have done things that they ought______.
A. not to do
B. not to be done
C. not to have done
D. not having done
He used to get up at six in the morning, ______？
A. used he
B. did he
C. didn'the
D. should he
According to the passage, which people seem to age slower than the others？
A. Shop assistants, lawyers, and professor.
B. Farmers, doctors and clerks.
Clerks, professor and farmers.
D. Lawyers, professor and doctors.
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