问题

(2013·安徽蚌埠一次质检)So quickly ________ is a possibility today may be a reality tomorrow.
A:are science and technology advancing that
B:science and technology advancing are that
C:science and technology are advancing what that
D:are science and technology advancing that what
B:science and technology advancing are that
C:science and technology are advancing what that
D:are science and technology advancing that what
正确答案是: