Question

閱讀理解 　　Dolphins are very interesting animals which are known as the friendliest of all．Dolphins live in deep waters but come to the shores and shallow waters for food at times．Though they live in water．, they're mammals and breathe air through their blowhole(呼吸孔)on their head．Some dolphins rise up to the surface every 20 to 30 seconds and some can hold their breath for over 30 minutes．When they sleep, half of their brain is active and one of their eyes is always open． 　　They have excellent sight and very well-developed eyes, which can spot food as well as enemies from a long distance．Dolphins can swim very slowly and often rest at the bottom of the sea bed．They have their won individual whistles which can be recorded and through which they communicate with each other． 　　Reproduction in dolphins occurs during the spring months and they find their mates much earlier than the mating(交配)period．The gestation(懷孕)period of a female dolphin is about 11 to 12 months．The calves(babies)can swim and breathe immediately after birth．Sometimes they are born at the surface of the water to help them to breathe more easily．The mother nurses the calf for the next 13 to 18 months when it stays close to the mother． 　　Dolphins eat many kinds of fish and squid(魷魚)．Their favourite kinds of fish are mackerels(鯖)or herrings(鯡)which have fat and can provide energy for the dolphins to swim and survive．Squid don't have much fat, so to get the equal amount of energy, dolphins eat more squid． 　　These are some important facts about dolphins．Unfortunately, some dolphins have become endangered and it's our responsibility to protect these charming animals．Let's respond to the dolphins' call by saving them． (1) According to the text, dolphins ________． [　　] A． breathe air with their nose in the water B． close one eye while they are sleeping C． recognize each other due to their excellent sight D． are used to bearing their babies on the water surface (2) What can we infer from the text? [　　] A． Sometimes dolphins need to eat more to get enough energy． B． A dolphin of 2 years old still relies on its mother． C． Without blowholes, dolphins can't find food． D． Dolphins can stay in deep waters all day and all night． (3) Which of the following statements is TRUE? [　　] A． Mackerels and squids are both rich in fat． B． The fatter the fish is, the less energy it provides． C． Fat herrings are dolphins' favorite food． D． Dolphins don't like to eat fish with much fat． (4) The purpose of the last paragraph is to ________． [　　] A． show that dolphins are dangerous B． describe the present situation of dolphins C． call on readers to protect dolphins D． describe the features of dolphins

Answer 1

答案：1．B;2．A;3．C;4．C;