符合贮铁耗尽的是()。
A.贮存铁下降
B.血清铁下降
C.运铁蛋白饱和度下降
D.小细胞低色素性贫血
E.总铁结合力下降
参考答案:A
There was a bloody incident and more than 20 journalists were reported ____ in southern Philippines.
A.having been killed
B.to have been killed
C.being killed
D.killed
交流电经过变压器就成直流了。