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举一反三
【单选题】Why do we make people do exams It’s a strange form of torture to go through just for a piece of paper. In the months before the exam it seems all right. You tell yourself that what you don’t know toda...
A.
a good way of learning
B.
a bad way of learning
C.
an excuse for not learning
D.
a plan for later learning
【单选题】Few foods are more alluring than chocolate. "Chocolate is a drug of abuse in its own category," jokes Dr. Louis Aronne. "It’s ahnost as if people have chocolate receptors in their brains. " That may n...
A.
Sugar and fat stimulate our brain’s pleasure center.
B.
Sugar and fat cause our brain to think faster.
C.
Sugar and fat lower our stress level and give us comfort.
D.
Sugar and fat contain certain drug-like substances.
【单选题】镇静剂吗啡可使患者的睡眠发生什么变化（）
A.
延长人睡时间，缩短总睡眠时数
B.
缩短入睡时间，延长总睡眠时数
C.
延长入睡时间，延长总睡眠时数
D.
缩短人睡时间，缩短总睡眠时数