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参考答案：
参考解析：
刷刷题刷刷变学霸
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】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