The computer company’s present troubles are a result of technological stagnation,marketing missteps, and managerial blundersso that several attempts to revise corporate strategies have failedto correct it.
A.so that several attempts to revise corporate strategies havefailed to correct it.
B.so that several attempts at revising corporate strategies havefailed to correct.
C.in that several attempts at revising corporate strategies havefailed to correct them.
D.that several attempts to revise corporate strategies havefailed to correct.
E.that several attempts at revising corporate strategies havefailed to correct them.
正确选项D这里 a of b that...这个结构，that可以指代a,就是说that指代的是result
GWD-10-Q3: For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.