下图中表示南半球中低纬海区寒流的是
A、A
B、B
C、C
D、D
答案:A
—What’s the trouble with you,Andy?
—I want to find another firm.Whatever I do,I can’t _____ the boss now.[ ]
A. support
B. serve
C. fit
D. satisfy
对紫外线阻挡作用较差的镜片是()
A.标准树脂(CR39)镜片
B.聚碳酸酯(PC.镜片
C.透明玻璃镜片
D.高折射率树脂镜片
E.高折射率玻璃镜片