The first paragraph suggested that the writer thinks that the modern furniture designs is basically ______.

A．By bus.
B．By plane.
C．By ear.
D．By train.

A．Climbers have the opportunity to be outside and enjoy the scenery.
B．Climbing isn’t as expensive as other sports.
C．Learning to climb doesn’t take a very long time.
D．Climbers develop skills useful in other activities.