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　　1. The author of the book has shown his remarkably keen _______ into human nature.
　　[A] intellect
　　[B] insight
　　[C] perception
　　[D] understanding
　　2. Smoking is a(n) _______ cause of lung cancer.
　　[A] major
　　[B] great
　　[C] large
　　[D] important
　　3. This procedure describes how suggestions for improvements to the systems are _________.
　　[A] celebrated
　　[B] proceeded
　　[C] generated
　　[D] established
　　4. “Since we are exchanging _________, I too have a secret to reveal,” said Mary.
　　[A] transferences
　　[B] transactions
　　[C] confidences
　　[D] promises
　　5. Like some foreigners, I ask a lot of questions, some of which are insulting silly. But everyone I ________ has answered those questions with patience and honesty.
　　[A] come across
　　[B] come by
　　[C] come over
　　[D] come into
　　6. _________ being fun and good exercise, swimming is a very useful skill.
　　[A] Rather than
　　[B] Apart from
　　[C] Instead of
　　[D] Owing to
　　7. Because of the Great Depression in the 1930s, his company conducted a low _______of business with the government.
　　[A] amount
　　[B] number
　　[C] volume
　　[D] capacity
　　8. The idea of being evaluated by ____________ makes some managers uneasy.
　　[A] substance
　　[B] subsidy
　　[C] subordinate
　　[D] subsequence
　　9. The contract is __________ unless it is officially stamped.
　　[A] invalid
　　[B] invaluable
　　[C] precious
　　[D] deliberate
　　10. Becoming aware of our mother’s age, not just in numbers of years but _________ her psychological and physical state, often helps us to understand her better.
　　[A] in spite of
　　[B] on account of
　　[C] in terms of
　　[D] by means of