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Do you know whales(鲸)? Whales are sea animals. They 1 very big fish. But whales are different from fish because babies stay with 2 mothers and drink their milk for a year or more. Whales are also different from fish because they 3 swim up to the surface(表面) of the water to take air in every 30 or 40 minutes.
There 4 two different kinds of whales: whales without teeth and whales with teeth. One kind of whale is the blue whale. Blue whales 5
have teeth. They are very big animals, 6 they only eat very small sea animals. These small sea animals are called "krill". 7 kind of whale is the dolphin. Dolphins have 8. They eat fish and live in family groups. They are friendly and learn 9, so dolphins are very smart animals.
Whales always make 10 sounds under-water. These sounds are different from other animals' and very loud(响亮的). Other whales can even hear them from 1,000 miles away.
()1. A. come from B. look like
C. talk to D. know about
()2. A. our B. their
C. its D. your
()3. A. have to B. has to
C. had to D. having to
()4. A. am B. is
C. are D. be
()5. A. doesn't B. don't
C. didn't D. aren't
()6. A. and B. or
C. so D. but
()7. A. Other B. Another
C. Others D. One
()8. A. teeth B. feet
C. legs D. arms
()9. A. slowly B. happily
C. quickly D. sadly
()10. A. sad B. worried
C. famous D. strange

1. B 2. B 3. A 4. C 5. B 6. D 7. B 8. A 9. C 10. D