用于感染鹅且致病性最强的寄生虫是()
A.柯氏艾美尔球虫
B.有毒艾美尔球虫
C.鹅艾美尔球虫
D.截形艾美尔球虫
E.毒害艾美尔球虫
参考答案:D
Are ______ her parents?[ ]
A. this
B. these
C. that
航次装船合同