弱还原气氛不足易产生（）
A.氧化泡
B.还原泡
C.釉泡
D.过火泡
参考答案：B
气血瘀滞证的舌象是（）
A.舌色淡红
B.舌质淡白
C.舌质绛红
D.舌质紫暗
E.舌起粗大红刺
I'd like to buy a new computer, but I don't know _______. [ ]
A. where could they buy it
B. where can I get it
C. I should choose which
D. which I should choose
