Why did men invent language？
A. To make nice sounds for others to hear.
B. To be different from animals.
C. To have something to write down with.
D. To make their ideas known to others.
查看答案
What do we know about the experimental warbler？
A. It had never flown freely outdoors.
B. It was set free for the experiment.
C. It had never been placed under the sun.
D. It had lost its way in its daylight flight.
What does "fill in the blanks" in the first paragraph mean？
A. To do the exercise.
B. To take the test.
C. To know the right words.
D. To know the answer.
What do we know about warblers as a whole？
A. They do not have intelligence.
B. They do not need to learn to fly in the right way.
C. They tend to take the same route as other birds.
D. They cannot sense changes in the position of the moon.
A．Because we feel that we have become mature.B．Because laughter is the best medicine.C
A. Because we feel that we have become mature.
Because laughter is the best medicine.
C. Because we understand the world around us better.
D. Because laughing helps us overcome trouble.
微信支付 
支付宝支付