试题详情

A good hunting dog is ____ to every sound and movement in the field

A good hunting dog is alert ________ every sound in the field.

,and the stream of plasma coming from the Sun is called the solar wind. The more active the Sun,the

inson is big and brown. My boss brings him to work every day. He takes the dog to meetings and he ta

to sleep is largely a habit. The conditions referred to only lead to sleep. Out-of-door（ 31）,a good