如图所示,SA、SB是光源S发出的两条光线.其中SA平行于主光轴,SB过左焦点,请画出这两条光线通过凸透镜后出射光线(注意标出箭头方向)。
A.迎着月光走,地面上暗处是水潭;背着月光走,地面上发亮处是水潭
B.迎着月光走,地面上发亮处是水潭;背着月光走,地面上暗处是水潭
C.迎着月光走或背着月光走,地面上发亮处都是水潭
D.迎着月光走或背着月光走,地面上暗处都是水潭
Look out! Don't get close to the House roof is under repair. [ ]
A. whose
B. which
C. of which
D. that