题目

Your Excellency, Ladies and Gentlemen, I take great pleasure in formally welcoming you and Madam Liu to Buckingham Palace on the occasion of your State Visit to the United Kingdom．You are certainly no stranger to the United Kingdom．This will be your second visit this year, and I also met Your Excellency when you visited as Vice-President in 2001． It is now almost twenty years since I visited China．Since then China's development has caught the world's attention and admiration．It matters to all of us what kind of country China's people will build, what role they will play in the world （6分）下图表示物质通过红细胞膜的示意图，其中黑点代表物质分子，圆圈代表载体，　表示能量，请回答： （1）①属于　　　　　　；②属于　　　　　　；③属于　　　　　　。 （2）O2、酒精、K＋、葡萄糖、NO3－中，属于①的是　　　　　　；属于②的是　　　　　　；属 于③的是_________________________.