A：是跨经度最广、东西距离最长的大洲
B：河流多发源于西部高山地带，流入太平洋
C：亚洲地形以平原山地为主，地势西高东低
D：地形多样并且起伏大，增加了气候的复杂性
已知集合A={x|x=3n+2,n∈N}, B={6,8,10,12,14}，则集合A∩B中的元素个数为( )
选择括号内恰当的单词或词组填入空白处，使句意完整、正确。 Are you going to____ （join / take part in）the school rowing club?I think the computer is ____（used / useful）.I spent two hours____ （sweep / sweeping）the house yesterday.The house is so expensive that I can't____ （share / afford）it.Even scientists aren't sure ____（if / whether）or not there are UFOs.
—When and where were you born?
—I was born ________ October 1st, 1988 _________Suzhou.
