【周四美国三大股指全线收低纳指创2011年以来最大单日跌幅】美国三大股指周四（4月10日）全线大幅收跌，科技和生物技术股再遭重创，纳指大跌3.10%，创2011年以来最大单日跌幅。http://t.cn/8s9JEmW
O B-time I-time B-location I-location O O O O O O O O O O O B-time I-time I-time I-time I-time O O O O O O O O O B-location I-location O O O O B-time I-time O B-time I-time I-time I-time I-time O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-time I-time I-time I-time I-time O O O O O O O O O B-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name I-product_name