Question

Listen to the passage and fill in the missing words

Birds do not fly high in the sky. The air is too ________.It is ________ for birds to breathe(呼吸) in thin air and thin air does not ________ them up. Birds fly near the _______ so that they can see ________ they are. The birds look for places they know. Then they do not get ________. Some birds fly very ________ over the oceans. Many birds fly ________ away in spring and autumn.

Answer 1

答案：
解析：

thin, hard, hold, ground, where, lost, low, far 　　Listen to the passage and fill in the missing words 　　Birds do not fly high in the sky. The air is too thin. It is hard for birds to breathe in thin air and thin air does not hold them up. Birds fly near the ground so that they can see where they are. The birds look for places they know Then they do not get lost. Some birds fly very low over the oceans. Many birds fly far away in spring and autumn.