单项选择题

The intermediate host is not required for the development of Angiostrongylus cantonensis.

A.正确
B.错误
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Clonorchiasis mainly causes gastroenteritis in humans and animals.
A.正确
B.错误
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The final hosts of Clonorchis sinensis are freshwater fish and shrimp.
A.正确
B.错误
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