麻疹的传染期是
A．从潜伏期到出疹
B．出疹前后各五天
C．从科氏斑出现到疹消退
D．从发热到出疹
E．从疹出到疹退
参考答案：B
--- What was the Shanghai World Expo’s opening day like?
--- Wonderful. It’s years ______ I enjoyed myself so much.
A．that
B．since
C．before
D．when
白细胞总数异常增生性增多见于()
A．狂犬病
B．原发性血小板增多症
C．急性失血
D．急性白血病
E．慢性白血病
