The patient's son asked the doctor the question________his father could survive the big operation.
A．whether　　B．ifC．that　　　D．what
A
考察連詞，根據(jù)句子結(jié)構(gòu)可知，該句為同位語從句，作question的同位語，從句中缺少“是否”的含義。同為語從句中不能使用if，所以選擇whether
句意為，病人的兒子問醫(yī)生一個問題，他的父親是否能夠在手術(shù)中幸存下來。
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