可摘局部义齿中不起稳定作用的部分是()
A.基托
B.人工牙
C.间接固位体
D.连接体
E.以上部分都起稳定作用
参考答案:B
8岁小儿极重度贫血的诊断指标是()
A.Hb>120g/L
B.Hb<120g/L
C.Hb<90g/L
D.Hb<60g/L
E.Hb<30g/L
When a pencil is partly in a glass of water, it looks as if it ______. [A] breaks [B] has broken [C] were broken [D] had been broken