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1. Because of advances in technology in recent years, Americans are enjoying more free time. (A) leisure (B) measure (C) treasure (D) pleasure

1. One of California’s most acute problems is an inadequate water supply. (A) unusual (B) persistent (C) unexpected (D) critical

1. Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines. (A) desirable (B) derivable (C) accessible (D) feasible

1. Efficient air service has been made available through modern technology. (A) affluent (B) modern (C) inexpensive (D) effective

1. Her brusque manner surprised all of the guests. (A) satirical (B) humorous (C) shameless (D) abrupt

1. The discontented students retaliated by boycotting the school cafeteria. (A) rewarded (B) vindicated (C) took revenge (D) fluctuated

1. The densely populated area was a breeding place for infections diseases. (A) meagerly (B) improperly (C) sparsely (D) heavily