题目：
Only by increasing the number of doctors by 50 percent ________ properly in this hospital. (2013·大纲全国，32)
A．can be the patients treated
B．can the patients be treated
C．the patients can be treated
D．treated can be the patients
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
