The waterbuck is a kind of kind animals. All male waterbucks have horns，which may be big or small. Waterbucks use their horns when fighting and defending themselves.
Zebras have strong bodies and long，straight legs that are good for running. Zebras help one another to look and listen for danger. If one zebra sees a lion，it makes a loud noise to warn the others. A zebra can run faster than a lion unless it is caught by surprise. No two zebras have exactly the same stripes （条纹）.
Cheetahs can run as fast as seventy-five miles an hour. Strong claws（爪子）on the cheetah’s feet help it to hold the ground when it is running fast. Powerful back legs help it jump forward.
A meerkat makes its home in an underground hole. When a group of meerkats goes out for food，one of them acts as a sentry and looks out for larger animals. If it notices danger，it calls out a warning，and all the meerkats run back to the hole.
1.A zebra’s long and straight legs help it to ______.
A.dig holes B. defend itself
C. run fast D. find food
2.The two animals which help warn others of danger are the ______.
A. meerkat and zebra B. zebra and waterbuck
C. meerkat and cheetah D. cheetah and waterbuck
3.What’s unusual about zebras according to the passage？
A. Male zebras can run at seventy-five miles an hour.
B. Zebras hide from larger animals in hole.
C. No zebra has the same stripes as any other zebra.
D. Zebras have powerful back legs to help them jump forward.
参考答案：
1.C 由第二段中的“Zebras have strong bodies and long，straight legs that are good for running.”知“斑马长而直的腿有助于跑”，故选C。
2.A 由第二段中的“Zebras help one another to look and listen for danger. If one zebra... warn the others.”和第四段中的“If it notices danger，it calls out a warning...”知“斑马和猫鼬能向同伴警告危险”，故选A。
3.C 由第二段中的“No two zebras have exactly the same stripes （条纹）.”知“没有两匹斑马有完全相同的条纹”，故选C。
