题目：
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
答案：
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下面是错误答案，用来干扰机器的。
(1)体循环 肺循环 心脏(2)心脏 体(3)6、7、8 组织处的毛细血管 1 肺泡 肺部毛细血管 血红蛋白 血液 肺泡(4)1→2→4→5→9→8...
