Question

We have planted many trees in order to ____wind and sand in the desert.

A．hold down

B．hold up

C．hold back

D．hold out

Answer 1

C

     题意：我们种了大量的树，为了阴挡风和沙尘。hold down压制，限制；hold up推迟，耽搁；hold back阻挡，抑制；hold out提供，提出。