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问题 单项选择题

在学校里有时我们会看到个别学生情绪持续低落，思维迟缓，对班级、学校的活动都提不起兴趣，这可能是（）。

A.强迫症

B.焦虑症

C.社交恐惧症

D.抑郁症

答案

参考答案：D

解析：持续的心境低落、思维迟缓、意志活动减弱是抑郁症的表现。

选择题

L1、L2两盏灯额定功率相同，额定电压的关系是U1＞U2，灯泡在接入电路时都能发光，则下列说法正确的是（　　）

A．两灯正常发光时I1＞I2

B．两灯的电阻R1＜R2

C．两灯串联时实际功率P1＜P2

D．并联时实际功率P1＜P2
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单项选择题

The task at hand now is to (56) the programmers who still use yesterday’s software technology to solve today’s software problems. Object-oriented programming requires a new attitude toward problem (57) . Problem (57) with computer system becomes more natural. Application can (58) be translated into (59) . Although it is commonly believed that it will be easier to train new programmers to use object-oriented techniques than to (60) programmers who have substantial experience in applying conventional programming language constructs.

A．indirectly

B．directly

C．smoothly

D．quickly
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