—Excuse me， can you tell me where the nearest bank is， please? —______ Oh yes! It’s past the office， next to a big market. A. Mm， let me think. B. Oh， I beg your pardon? C.
When you get involved in sports, a lot of racial____are broken down because players developed friendship quickly. A. barriers B. threats C. approaches D. hardships
中，
，
，则
( )
(a10－a9)＋(a9－a8)＋…＋(a2－a1)＋a1＝lg
＋lg
＋…＋lg
＋1＝lg
＋1＝2.故选B.