根据下面短文内容,回答题。
Operation Migration
Whooping cranes migrate in winter to__________. 查看材料
A.find warmth and food
B.raise baby whooping cranes
C.get human help
D.lay eggs
第1题
A.Mexico
B.South America
C.North America
D.The Persian Gulf
第2题
A.teach adult cranes how to fly
B.lead young cranes on their first trip south
C.breed cranes in special parks
D.transport cranes to the North
第3题
A.120miles
B.1,200miles
C.1,931miles
D.2,000miles
第4题
A.follow airplanes south every year
B.live in Canada all year round
C.learn to migrate on their own
D.be unable to fly back
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