单项选择题 下列哪种成分是粥样斑块所没有的?( ) A．泡沫细胞 B．胆固醇结晶 C．红染的无定形物质 D．淋巴细胞 E．中性粒细胞

填空题 The elements can be classified broadly into three basic groupings，i.e.：A）（），metalloids，and B）（）because they have certain common properties.

单项选择题 The head of the Los Angeles police department said those without tickets ______ to take part in it in the area. A．will not be allowed B．dont allowed C．are not allowed D．wouldnt be allowed