下列说法中,正确的是 [ ]
A.延长直线AB到C
B.C,D两点间的距离就是线段CD
C.射线比直线短一半
D.同一平面内有四个点,以其中任意两个点为端点可以得到6条线段
答案:D
--- It's time _________.
--- I'm coming,Mum.
A.for breakfast
B.have breakfast
C.for you have breakfast
D.for have breakfast
新生儿复苏有低血容量时可先静注25%葡萄糖()
A.0.5ml/kg
B.1.0ml/kg
C.2.0ml/kg
D.2.5ml/kg
E.3.0ml/kg