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帮帮忙,选择题.1、____ medical authorities express their concern abo

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帮帮忙,选择题.
1、____ medical authorities express their concern about the effect of smoking on the health not only of those who smoke but also of those who do not.
A.Still B.More C.Again D.Further
2、In fact,nonsmokers who must involuntarily breathe the air polluted by tobacco smoke may ____ more than the smokers themselves.
A.endure B.suffer C.undergo D.put up with
问:第一题为什么答案是D,不选B;第二题选哪个,为什么,四个词有什么区别?
1)Further本意更远,这里引申为进一步的.深一层的
深层医学权威表明他们关心的不只是.
2)B
ender,忍受,耐住;
undergo,经历,经受;忍受
put up with,忍受
而只有suffer有遭受,受损害的意思