下列地理事物属于亚洲和欧洲分界线的是( )
曰本官方曾十多次派遣使节到唐朝访问的根本目的是( )
从右栏中选择与左栏对应的答语。
①How old is Wang Liang?____ A. It's a map.
②Are those your friends?____ B. They are rulers.
③What's that in English?____ C. I'm in Class Five.
④What are those?____ D. No, they aren't.
⑤What class are you in?____ E. He is nineteen.
已知在Rt△ABC中,∠C=90°,sinA=35,则tanB的值为____