14．______ having some money does have a good effect on our level of happiness，having too much money does not.
A．While B．When C．As D．Until
答案 A [句意：尽管有一些钱的确可以使我们感到快乐，可是有太多的钱却并非如此。While在这里表示“尽管；虽然”。]
15．Other men live to eat ，______ he eats to live.
A．and B．when C．while D．or
答案 C [句意：其他人活着为了吃饭，而他吃饭是为了活着。while这里意为“而”，表示前后对比。]
