Question

People have planted a great many trees in order to _________ wind and sand in th

People have planted a great 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

答案C
hold down“压制，限制”；hold up“(使)推迟，耽搁，支撑”；hold back“阻挡，抵制”；hold out“维持，坚持”。句意：人们种了大量的树以阻挡沙漠中的风沙。由此可知只有C项符合句意。