A) Many people believe that DVDs are not of good quality.
B) People are more likely to get movies from the Internet.
C) Some people think that DVDs are very expensive.
D) People like watching TV better than watching DVDs.
第1题
河蟹病重,肉味恶臭,打开脐盖肉眼可见乳白色或半透明粒状虫体,可能感染()
A.微孢子虫病
B.蟹奴病
C.虾疣虫病
D.固着类纤毛虫病
第8题
第二中间宿主为淡水蟹(如溪蟹、石蟹等)及喇蛄的是
A.华支睾吸虫
B.姜片虫病
C.卫氏并殖吸虫
D.由虫体代谢产物引起致病
E.由虫体分泌水解酶引起致病
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