___________ with the size of the whole earth, the highest mountain doesn't seem high at all.

A. When compared                   B. To compare

C. While comparing                 D. It compared

__________ with the size of the whole earth，the highest mountain doesn’t seem high at all.

A.When compared                              B.To compare?

C.While comparing                                   D.It compared?

with the size of the whole earth, the highest mountain doesn't seem high at all.

    A. When compared                   B. To compare

    C. While comparing                 D. It compared

________with the size of the whole earth, the highest mountain doesn't seem high at all.

A. When compared                   B. To compare

C. While comparing                 D. It compared

______ with people in the West, people in the East pay more attention to their family.