What does "their Japanese counterparts are comfortable in their obscurity" in the first paragraph mean？
A. Japanese bosses are more inclined to direct a group endeavor rather than personal accomplishment.
B. Japanese bosses often do not like to appear on magazine covers.
C. It is rather hard to get close to Japanese bosses.
D. Japanese bosses" images are often obscure in people"s eyes.
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AIDS is said______the No. 1 killer of both men and women over the past few years in that region.
A. being
B. to be
C. to have been
D. having been
What is believed by most experts to be the main reason for increasing tuition？
A. The increasing number of the full-time support staff.
B. The reduction in the government funding for higher education.
C. The rising inflation in the country.
D. The increasing number of the students.
In discussing the subject matter of SF, the author focuses on ______.
A. its main functions.
B. its great diversity.
C. its bold assumptions.
D. its social impact.
What is said about smaller marine life？
A. It is impossible to count its number owing to its invisibility.
B. It is found that all smaller marine life live in the sea bed.
C. Some smaller marine life are tiny while others are massive.
D. Some familiar creatures depend on smaller marine life for food supply.
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