问题
China has recently ______ its waters controls near the Diaoyu Islands to prevent Chinese fishing boats from ______ in the East China Sea．
A:show up; attacking
B:taken up; having attacked
C:hina has recently ______ its waters controls near the
D:picked up; having been attacked
B:taken up; having attacked
C:hina has recently ______ its waters controls near the
D:picked up; having been attacked
正确答案是：
