45.To keep our family safe from fire,we should do all of the following things EXCEPT________.
A.check the smoke detector once a month
B.learn how to use a fire extinguisher
C.stop using space heaters in winter
D.practice a fire escape plan at least twice a year
答案 C [细节理解题。最后一段建议人们要be particularly careful with space heaters,但并没有说不可以用space heaters。]
46.The underlined word“them” in the last paragraph refers to__________.
A.kitchens of the families
B.the space heaters
C.the instructions on space heaters
D.fire extinguishers
答案 B [推理判断题。根据语境可以推断,要将加热设备放在离其他物品至少三英尺的距离,故选B。]
47.We can conclude from the passage that________.
A.home fires can be prevented by proper planning
B.every home in America has been equipped with smoke detectors
C.most home fires happen because of heating equipment
D.90% of American home disasters are caused by fire
答案 A [推理判断题。通读全文可以得出这样的结论:如果事先做好准备,家庭火灾是可以避免的。]
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