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【填空题】
鸟翅、鲸的鳍状肢和人的手臂是（）器官。
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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】“我是南极的主人，我有流线型的躯体，人家说我像身穿白衬衫，黑燕尾服的绅士。我游泳的鳍状肢。为了抵御严寒，我皮肤下有厚厚的脂肪层。”材料中的“我”是[ ]
A.
北极熊
B.
袋鼠
C.
大象
D.
企鹅
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】“我是南极的主人，我有流线型的躯体，人家说我像身穿白衬衫，黑燕尾服的绅士。我游泳的鳍状肢。为了抵御严寒，我皮肤下有厚厚的脂肪层。”材料中的“我”是[ ]
A.
北极熊
B.
袋鼠
C.
大象
D.
企鹅
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