Microscopes make small things appear larger than_________ .

Microscopes make small things appear larger than_________ .
A、they are really
B、they really are
C、really are
D、are really
【正确答案】：B
【题目解析】：本句句意为显微镜就是使小的东西，比它们本来的样子，看起来要大。首先不能省略。他们真正的样子，翻译成英语就是they really are，所以排除CD选项。在选项A中，they are really后面必须加东西。所以选项A也不对。