问题补充:
Unfortunately, the element Madam Curie devoted all her life her death.
A. to caused
B. causing
C. to be caused
D. to causing
答案:
(答案→)A. to caused
B. causing
C. to be caused
D. to causing
解析:本题考查动词。句中Madam Curie devoted all her life to作定语,修饰the element,主句缺少谓语动词,根据语境用一般过去时,选A。