339.If it is quite ____ to you,I will visit you next Tuseday.
A.convenient
B.ordinary
C.fragile
D.precious
340.Life is too short to waste and too _____ to give up.
A.expensive
B.accessible
C.affordable
D.available
339.答案是A；convenient 方便的。
340.答案是D;expensive 昂贵的；precious 宝贵的，珍惜的。句意:人生太短暂，太宝贵以致不能轻易地浪费或放弃。
