What is bothering Obama is how to improve medical care to benefit people. (), how to create health care system that helps people is his present-day trouble. ( 章节：3 难度：2)_做题室

单项选择题What is bothering Obama is how to improve medical care to benefit people. (), how to create health care system that helps people is his present-day trouble. ( 章节：3 难度：2): A、In other words; B、On the other hand; C、On the contrary; D、As a matter of fact

正确答案：A
答案解析：
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