可知海豚是动物.故填They are mammals.2. 细节理解题.根据第二段句子"They don't use their ears to receive sounds, but use the jaws(下颚). "可知海豚是用下颚接受声音的.故填The jaws.3. 细节理解题.根据第三段句子"In the 19th century, in a dangerous part of the sea near New Zealand, ...
根据第一段“Dolphins are not fish. They are mammals;”,可知“海豚不是鱼,是哺乳动物”,所以A表述正确;根据第三段“It is strange that dolphins are friendly to men”,可知“海豚对人类很友好”,所以B表述正确;根据第一段“They live in groups and speak to each other in their own language.”,...
Dolphins are not fish.They are mammals (哺乳动物).They live in groups and speak to each other in their own language. But they are quite different from almost all land animals. Their brain(大脑)is as big as men's and they live a long life at least 20 or 30 years. Like some animals...
Dolphins are not fish.They are mammals(哺乳动物).They live in groups and speak to each other in their own language.But they are quite different from almost all land animals.Their brain (大脑) is as big as men's and they live a long life-at least 20 or 30 years. Like some animals,...
Dolphins are not fish.They are mammals(哺乳动物).They live in groups and speak to each other in their own language.But they are quitedifferent from almost all land animals.Their brain is as big as man's and they live a long life--at least 20-30 years. Like some animals,dolphins use...
Dolphins are not fish.They are mammals.They live in groups and speak to each other in their own language.But they are quite different from almost all land animals.Their brain is as big as man's and they have a long life-at least 20 or 30 years. Like some animals,dolphins use sounds...
Dolphins are not fish.They are mammals(哺乳动物).They live in groups and speak to each other in their own language.But they are quite different from almost all land animals.Their brain is as big as men's and they live a long life—at least 20 or 30 years. Like some animals,dolphins...
Dolphins are not fish.They are mammals(哺乳动物).They live in groups and speak to each other in their own language.But they are quite different from almost all land animals.Their brain is as big as man's and they live a long life--at least 20-30 years. Like some animals,dolphins ...
Dolphins are not fish.They are mammals(哺乳动物).They live in groups and speak to each other in their own language.Like many animals,they use their sounds to communicate with each other.However,a new study has found that mother dolphins use different sounds to communicate with their young.The...
Like some animals,dolphins use some sounds to help them find their ways around.They also use sounds to talk to each other and to help them find food.They don't use their ears to receive sounds,(2) ___ use the laws(下颚). (3) ...