与血轮疾病关系密切的相关脏腑是（）。
A.肝
B.肾
C.心
D.膀胱
E.小肠
参考答案：C, E
从1到10的10个正整数中,任意取两个数相加,所得的和为奇数的不同情况有（ ）种.
A．20
B．25
C．15
D．30
—I don't know your brother.
—Oh. The man _______ came to see me yesterday is my brother. [ ]
A. who
B. whose
C. where
D. whom
