漏出液中的LDH与血清LDH的比值常
A.<0.6
B.<0.5
C.<0.1
D.>0. 4
E.>0.3
参考答案:A
The boy has poor eyesight because of _______ computer games.
A.much too
B.too much
C.many too
D.too many
加拿大人最忌讳送()去家里,因为它们是与死人葬礼联系在一起的。