Where does the writer usually spend his holiday？
A. In the mountain.
B. In the north.
C. In the country.
D. By the sea.
Many Englishman join in the movement of "do-it-yourself", because ______.
A. they are skilled handymen
B. they are proud of their houses
C. they can't afford professional help
D. they are mean
【B13】
A. with
B. across
C. over
D. above
What does a social scientist study？
A. The family.
B. Human beings as members of groups.
C. Nation.
D. Molecules and ions.
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