已知a<b,则下列不等式一定成立的是[ ]
A.a+3>b+3
B.2a>2b
C.-a<-b
D.a-b<0
答案:D
在这种环境里行车使用近光灯。
Go ____ the gate and you' 11 find the entrance ____ the park ____ the other side.
A.through; to; on
B.along ;of; on
C.down; to; at
D.up; of; by