骨髓外造血的主要表现之一是（）
A.肝、胸腺肿大
B.肝、脾大
C.肝、肾肿大
D.脾、胸腺肿大
E.肾、胸腺肿大
参考答案：B
When the bus is driving along a busy street, you should be careful not to your head
of the bus window. [ ]
A. stick; to
B. stick; out
C. stick; on
D. stick; up
下列for语句的循环次数为______。 for(int a＝0，b＝1；b&&a＜5；a++)；
