Doctors are interested in using lasers as a surgical tool in operations on people who are ______to heart attack.

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问题 Doctors are interested in using lasers as a surgical tool in operations on people who are ______to heart attack.

选项 A、prone
B、disposed
C、infectious
D、accessible

答案A

解析 形容词用法辨析。be prone to“易于……的,很可能……的”,强调一种倾向性;dispose“使易于,使易感染”,常用于dispose of sb./sth.;infectious“传染的,感染的”;be accessible to“易受影响的,易懂得的”,强调可以得到,距离上的接近。本题指病人有可能患心脏病,因此prone正确。
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