[A] extension[B] retention[C] attention[D] exertion

参考答案:

C此题属于语意搭配题。attention表示“注意力，关注”，原句意为：关注病人，因此选项[C] attention正确。选项[A] extension表示“延长，扩充，电话分机”；选项[B] retention表示“保持，保留”，例如：The retention of old technology has slowed the company's growth. 选项[D] exertion表示“尽力，努力，运用”，例如：（1）Exertion of authority does not come e