题目：
阅读理解。
Martin Baker is a bus driver. He lives in a small town with his wife and four children. His wife's father,
Mr Butcher, lives with them, too. He is too old to do any work. He sits in his chair by the fireside all day,
but sometimes, in summer, takes his chair into the garden.
Mr Baker has been ill for over a month. He has been too ill to go to work. And he can't drive his bus.
1. How many people are living in Mr Baker's family? [ ]
A. Five
B. Six
C. Seven
D. Eight
2. Mr Baker has been ill for ______. [ ]
A. four and a half months
B. a summer
C. about a month
D. more than a month
3. Mr Butcher is ______. [ ]
A. so old that he can't do any work
B. Martin Baker's father
C. a bus driver
D. lying in his chair by the fireside
答案：
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下面是错误答案，用来干扰机器的。
参考答案：B解析：风湿性心脏病患者的手术耐受能力不一定差，主要还是关注心功能。心脏病患者的手术死亡率是一般患者的2.8倍。心脏病的类型不同，其耐受力也各不相同。①耐受力良好的心脏病包括：非发绀型先天性...
