阅读理解 We cannot feel speed. But our senses let us know that we are moving. We see

阅读理解

    We cannot feel speed. But our senses let us know that we are moving. We see things moving past us and feel that we are being shaken.

    We can feel acceleration, an increase in speed. But we notice it for only a short time. For instance, we feel it during the takeoff of a plane.

    We feel the plane’s acceleration because our bodies do not gain speed as fast as the plane does. It seems that something is pushing us back against the seat. Actually, our bodies are trying to stay in the same place, while the plane is carrying us forward.

    Soon the plane reaches a steady(稳定的) speed. Then, because there is no longer any change in speed, the feeling of forward motion stops.

1. We can tell that we are moving by ______.

[]

A. watching things move past

B. feeling the speed

C. feeling ourselves being shaken

D. both A and C

2. Acceleration is the name for ______.

[]

A. an increase in speed

B. a steady speed 

C. any kind of movement

D. the movement of a plane

3. During the takeoff of a plane, we feel that we are being ______.

[]

A. thrown forward

B. pushed back against the seat

C. lifted out of the seat

D. pushed down into the seat

4. We feel the plane’s acceleration because our bodies gain speed ______.

[]

A. just as fast as the plane

B. faster than the plane

C. more slowly than the plane

D. before the plane

5. This feeling stops when ______.

[]

A. the plane stops climbing

B. the plane lands

C. there is no longer a change in speed

D. we begin to feel speed

试题答案

答案：A;A;B;C;C