A、  B、  C、  D、  C图中两个小朋友，背对而坐，每人腿上都放着一台手提电脑，可知正确项是(C)“他们背靠背坐在地上”。

(A) The man is dialing a number on the phone.
(B) The man is talking to the phone while walking.
(C) The man uses his mobile phone in the office.
(D) The man is looking forward.

(A) The children are watching TV.
(B) The boy is using a laptop while the girl is listening a walkman.
(C) They are sitting on the floor, leaning against each other.
(D) They are sitting on the floor face to face.