is no doubt that the world is being smaller, due to the technological advances made by the puter.
A. It
B. There
C. That
D. This
网友回答
A. It
(答案→)B. There
C. That
D. This
解析：考查固定句型。句意：因为有了电脑带来的科技进步，世界正在变小是毫无疑问的。There is no doubt that...“......是毫无疑问的”，是一个固定句型，是there be句型的变型。故选B。