研究表明，采取健康的生活方式可将高血压和肿瘤的发病分别减少（）。
A、40%、15%
B、45%、20%
C、45%、25
D、55%、30%
参考答案：D
She _____an old friend of hers yesterday while she was shopping at the department store. [ ]
A. turned down
B. dealt with
C. took after
D. came across
磁铁矿比赤铁矿还原性好。（）
