高一英语阅读A beaver (海狐) has a large flat tail,which acts as a su

高一英语阅读
A beaver (海狐) has a large flat tail,which acts as a support when they sit or stand,a rudder (舵) when they swim,and a warning sign to others when danger is coming.Beavers can weigh as much as 60 pounds.The female is normally as large as or larger than the male.They have dark brown fur that is waterproof (防水的).Their eyesight is poor but other senses (hearing,smell and touch) are great.Beavers have large front teeth that stick out from their mouth.They never stop growing so beavers must bite on wood often to keep them short.Their noses have valves that stop water getting in their mouth when they chew on underwater wood.They can stay underwater for about 15 minutes at a time.Beavers only work at night and they are amazing builders.Much of their building material comes from trees.In one night,they can bite down many trees.First,the beaver will build a dam.This creates a pond for them to place their lodge (巢穴).The still,deep water protects them from enemies,including bears and wolves.They also make their entrances underwater to keep enemies from entering.Their dams and lodges can last for many years.They are well-constructed and require much effort to tear down.The male and female will produce many litters.Mothers often raise teenagers and newborns.In fact,the teen beavers will help with the younger beavers.A mother beaver will have two to four babies at a time.The young beavers will move out when they are about two years old.They will find mates and build their own lodges in another area.
66.Beavers’ tails can be useful in the following EXCEPT__________.
A.helping them swim B.building their lodges C.supporting their bodies D.giving warning sign to others
67.Which of the following about beavers is NOT true?
A mother beaver has one baby at a time.B.Beavers often have good hearing.C.The female grows faster than the male.D.It is the mother who raises the young.
68.Beavers often bite on wood mainly to__________.
A.feed themselves B.keep healthy C.build their houses D.stop their teeth growing 69.How can beavers protect themselves from enemies?
A.By biting down many trees B.By staying in their lodges C.By waving their large flat tails D.By working at night rather than in the daytime
70.Which of the following can best describe the characters of beavers?
A.A clever but shy animal.B.A brave and strong animal C.A productive and great builder D.A hard-working but dirty builder

66、B 由第一句话可知、、
67、A 倒数第二行A mother beaver will have two to four babies at a time.
68、D 第五行They never stop growing so beavers must bite on wood often to keep them short.
69、B 由 7、8、行可知
70、D、倒数第四行及全文推测、、
基本都属于细节题、、认真看看你能做的、、