对风疹和麻疹具有临床鉴别意义的是
A．发病季节B．血白细胞数减少．C．结合膜炎及鼻黏膜卡他炎症D．血清特异性抗体检测E．面部和躯体皮疹
参考答案：D
--What __________ the number of students in your school?
--More than 2,000. And a number of them __________ listening to English songs.
A．are; likes
B．is; likes
C．are; like
D．is; like
