Careful surveys have indicated that as many as fifty percent of patients do not take drugs _______ directed. ( 章节:1 难度:3)
- A、like
- B、so
- C、which
- D、as
正确答案:D
答案解析:有

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Careful surveys have indicated that as many as fifty percent of patients do not take drugs _______ directed. ( 章节:1 难度:3)

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