并殖吸虫病的重要传染源有()
A.溪蟹
B.短沟螺
C.患者
D.病兽和病畜
E.带虫且排虫卵者
参考答案:C, D, E
解析:并殖吸虫病的重要传染源有患者、病兽和病畜、带虫且排虫卵者。
Usually John ________ to school in his father’s beautiful car.
A.has taken
B.is taking
C.is taken
D.has been taken
商品编码栏目应填______。
A.85411000
B.8541000
C.INB0084
D.4456789