单项选择题

A. Accurate communication is of utmost importance.
B. Pilots should be able to speak several foreign languages.
C. Air controllers should keep a close watch on the weather.
D. Cooperation between pilots and air controllers is essential.
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单项选择题
A. File a lawsuit against the man.B. Ask the man for compensation.C. Have the man’s apple tree cut down.D. Throw garbage into the man’s yard.
A. File a lawsuit against the man.
B. Ask the man for compensation.
C. Have the man’s apple tree cut down.
D. Throw garbage into the man’s yard.
填空题
psychologist
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