病鱼的皮肤、鳍和眼球等处出现许多菜花样肿胀物,严重者可密布于全身,此病可能堤:()
A.斑点叉尾鲴病毒病
B.淋巴囊肿病
C.大菱鲆疱疹病毒病
D.鲤痘疮病
参考答案:B
— What club do you want to join?
— Music Club. I can play _____ guitar. [ ]
A. the
B. an
C. a
D. 不填
简略寿命表的组距,一般为
A.0B.1C.2D.3E.5