答案　B　[推理判断题。根据第一段her six－year－old son，Benjamin，to his piano lesson可知，Benjamin在六岁时就去学钢琴，说明他是在很小的年纪就学钢琴。]

　　22．The car accident happened because ________．

　　A．Barbara's car was out of control

　　B．there were so many cars on the road

　　C．there was ice on the road

　　D．Barbara was too tired to control her car

　　答案　C　[细节理解题。根据第三段a car had lost control on a patch of ice可知，因为地上有冰，一辆车失去控制造成了车祸。]

　　23．Why did Barbara consider going on her way instead of helping the passengers?

　　A．Because she worried about her son.

　　B．Because she didn't know first aid.

　　C．Because she was late for work.

　　D．Because someone else would help them.

　　答案　A　Then she paused.What about Ben? She couldn't take him with her.Little boys shouldn't see scenes like the one she anticipated(预料)．But was it safe to leave him alone? What if their car were hit from behind？可知，Barbara开始对救人犹豫是因为她担心儿子的安全。]

　　24．What did Barbara do to save the driver?

　　A．She ran to the hospital for help.

　　B．She drove the ambulance to the crash site.

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