属于手阳明大肠经的穴位有
A．水突
B．扶突
C．天鼎
D．天容
参考答案：B,C
如果a÷2.5=2.5÷b，那么a=10时，b=______．
.Jim is _______ boy.
A.a 8-years-old B.an 8-year-old C.an 8-years-old
