引起新生儿败血症和脑膜炎的主要病原菌为
A．A群链球菌B．B群链球菌C．肺炎链球菌D．肠球菌E．表皮葡萄球菌
参考答案：B
胃泌素瘤（）
A.血清胃泌素升高
B.胃酸降低或缺乏
C.两者均有
D.两者均无
—How come you are always staring at me this morning?
—You look stupid! The way you wear is________ annoys me most.
A．which
B．where
C．how
D．what
