题目

完形填空：请阅读下面的短文，选择最佳答案，并将其标号填入题前的括号内。 Spring Festival（春节）is the lunar( 阴历) New Year ,It usually comes  1  January or February . Everyone in China  2   Spring Festival very much .When Spring Festival  3  , Li Hong usually  4   his parents clean their house,  5  some shopping and other house work .On that  6  everyone in China eats dumplings, and other good   7   .Li Hong likes dumplings very much . 8   Wang Hai says dumplings are not very delicious( 美味) .The Chinese people  9   dum 在极坐标系中，已知圆ρ＝2cos与双曲线ρ2cos2－4ρ2sin2＝4．则它们的交点的直角坐标为________．