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【单选题】
鱿鱼、鲫鱼、娃娃鱼、鳄鱼、章鱼、带鱼这些动物中，真正属于鱼类的有（）
A.
1种
B.
2种
C.
3种
D.
4种
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【单选题】The Greatest Mystery of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking them—and, like all mammals, originated on land. There are many 1 of this...
A.
had
B.
operated
C.
seen
D.
caught
【单选题】The Greatest Mystery Of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking them—and, like all mammals, originated on land. There are many front flipper...
A.
interest
B.
job
C.
danger
D.
mystery
【单选题】The Greatest Mystery of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking them—and, like all mammals, originated on land. There are many 1 of this...
A.
set
B.
become
C.
remain
D.
rest
【单选题】地在建设池塘时,设计了如图所示的食物网,鲫鱼和鲢鱼生活在不同水层。关于该池塘生态系统的叙述,错误的是
A.
鲫鱼既是初级消费者又是次级消费者
B.
消耗等量藻类时,鳜鱼的生长量少于鲢鱼
C.
通气可促进水体中生物残骸分解为无机物
D.
藻类固定的能量小于流入次级消费者的能量
相关题目：
【单选题】The Greatest Mystery of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking them—and, like all mammals, originated on land. There are many 1 of this...
A.
had
B.
operated
C.
seen
D.
caught
【单选题】The Greatest Mystery Of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking them—and, like all mammals, originated on land. There are many front flipper...
A.
interest
B.
job
C.
danger
D.
mystery
【单选题】The Greatest Mystery of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking them—and, like all mammals, originated on land. There are many 1 of this...
A.
set
B.
become
C.
remain
D.
rest
【单选题】地在建设池塘时,设计了如图所示的食物网,鲫鱼和鲢鱼生活在不同水层。关于该池塘生态系统的叙述,错误的是
A.
鲫鱼既是初级消费者又是次级消费者
B.
消耗等量藻类时,鳜鱼的生长量少于鲢鱼
C.
通气可促进水体中生物残骸分解为无机物
D.
藻类固定的能量小于流入次级消费者的能量
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