C
Many people like cute and friendly dolphins. They like dolphin shows in the zoo. About 40
kinds of dolphins live in the world. Many of them live in the sea. But pink dolphins live in Ama-
zon River. Here is something about pink dolphins.
Pink dolphins are big animals. An adult(成年的) pink dolphin can be 2~2. 3m long and 100~
150 kilos. How heavy they are! Many dolphins are black and white or gray and white. But pink
dolphins are different. Their colors change with age. Young pink dolphins are gray. But adult
dolphins can show the color of pink. Pink dolphins have about 52 pairs of teeth. The teeth help
them get food easily. They eat about 50 kinds of fishes and crabs.
Like other dolphins, pink dolphins are social animals. They live in groups but their group is
small. A group has two or four pink dolphins. The pink dolphins in the same group go into the
water, play in the water and look for food together.
()1. Pink dolphins live ______.
A. in the sea B. in the zoo
C. in the park D. in the river
()2. What color is a young pink dolphin?
A. Black. B. White. C. Gray. D. Pink.
()3. In Paragraph 3, how does the writer explain(解释) the underlined word "social"?
A. By giving facts(事实). B. By listing(罗列) numbers.
C. By making a thinking map. D. By asking questions.
()4. According to the passage, which of the following is TRUE?
A. About 40 kinds of pink dolphins live in the world.
B. Pink dolphins are big but not heavy animals.
C. Pink dolphins' teeth help a lot in getting food.
D. Pink dolphins live in big groups.
()5. What is the best title(标题) for the text?
A. The colour of dolphins B. Dolphins' family
C. Pink dolphins D. Cute dolphins

C. 1. D 2. C 3. A 4. C 5. C