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.
A.120 miles.
B.1,200 miles.
C.1,931 miles.
D.2, 000 miles.
开始考试点击查看答案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.
开始考试点击查看答案A.Mexico.
B.South America.
C.North America.
D.The Persian Gulf.
开始考试点击查看答案A.find warmth and food.
B.raise baby whooping cranes.
C.get human help.
D.lay eggs.
开始考试点击查看答案A.reduce traffic jams
B.drive around
C.go by bus
D.spend more money
E.travel regularly
F.encou rage more private cars
开始考试点击查看答案A.To find where honey badgers live.
B.To observe how honey badgers behave.
C.To catch some honey badgers for foo
D.D.To find out why honey badgers have a bad reputation.
开始考试点击查看答案A.They show interest in things they are not familiar with.
B.They are always looking for food.
C.They do not enjoy human company.
D.C.They do not enjoy human company.D.It is common for them to attack peopl
开始考试点击查看答案A.There were some creatures they did not eat.
B.They were afraid of poisonous creatures.
C.They may get some of the water they needed from fruit.
D.Female badgers did not mix with male badgers.
开始考试点击查看答案A.They don't run very quickly.
B.They hunt over a very large area.
C.They defend their territory from other badgers.
D.They are more aggressive than females.
开始考试点击查看答案A.They became less aggressive towards other creatures.
B.They started eating more.
C.Other animals started working with them.
D.They lost interest in peopl
开始考试点击查看答案注册安全工程师注册安全工程师安全生产技术2013年注册安全工
类别:建筑类其它注册安全工程师注册安全工程师安全生产技术2013年注册安全工
类别:建筑类其它注册安全工程师注册安全工程师安全生产技术2013年安全工程师
类别:建筑类其它注册安全工程师注册安全工程师安全生产技术2013年安全工程师
类别:建筑类其它注册安全工程师注册安全工程师安全生产技术2013年安全工程师
类别:建筑类其它注册安全工程师注册安全工程师安全生产技术2013年安全工程师
类别:建筑类其它注册安全工程师注册安全工程师安全生产技术2013年安全工程师
类别:建筑类其它注册安全工程师注册安全工程师安全生产技术2013年安全工程师
类别:建筑类其它注册安全工程师注册安全工程师安全生产技术2013年安全工程师
类别:建筑类其它注册安全工程师注册安全工程师安全生产技术2012年注册安全工
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