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【多选题】
关于原生动物和微型后生动物,下列说法正确的是( )。
A.
原生动物为单细胞,微型后生动物为多细胞。
B.
钟虫为原生动物,轮虫为微型后生动物。它们是污水处理效果好的指示生物。
C.
原生动物的胞囊是抵抗不良环境的一种休眠体。
D.
轮虫、线虫、寡毛虫、浮游甲壳动物、苔藓虫、拟水螅均为微型后生动物。
E.
水蚤是甲壳动物。在污染水体中的水蚤颜色比在清水中的红些。利用水蚤的这个特点,可以判断水体的清洁程度。
F.
线虫的营养类型有3种:腐食性、植食性和肉食性。线虫是水净化程度差的指示生物。
G.
大多数轮虫以细菌、霉菌、藻类、原生动物及有机颗粒为食。
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相关题目:
【多选题】When do we need to skim?
A.
When we read for details.
B.
Before we read for details.
C.
Have a lot to read but not have muc time.
D.
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Cars are becoming one of the top sellers on the Internet.
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