21. ______ a lot of trouble, we should ask our parents, friends and relatives for help.
A. Faced B. Faced with C. To face D. Face
选B。考查face的用法。be faced with表示“面对着”。 Faced with a lot of trouble作状语，相当于when we’re faced with a lot of trouble。句意：当我们面对很多烦恼时，我们应该向我们的父母、朋友及亲戚求助。
22. Yushu, ______ in northwest China’s Qinghai province, was hit by a serious earthquake on April 18, 2010. Which of the following is WRONG?
A. situated B. located
C. lying D. staying
选D。A、B、C三项都表示位于，故D项错误。句意：位于中国西北青海省的玉树在2010年4月18日遭到了严重的地震的侵袭。
