乳腺癌最易发生于 * * 的（）
A.内上象限
B.外上象限
C.内下象限
D.外下象限
E.乳晕区
参考答案：B
The case of his death is being ________ and will be found out before long.[ ]
A. looked up
B. looked for
C. looked into
D. looked on
