GWD-TN-12中的第39题和第41题，题目内容附在了下面，请高人指教

Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.

A.      Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.

B.       Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished.

C.      Vanished are nearly 99percent of the five hundred million different species of living creatures that appeared on Earth.

D.      Of five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent of them have vanished.

E.       Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.

Alaska regularly deposits some of its profits from the sale of oil into a special fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves.

A.      fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves

B.       fund, the intention of which is to sustain the state’s economy after they have exhausted their oil reserves

C.      fund intended to sustain the state’s economy after oil reserves are exhausted

D.      fund intended to sustain the state’s economy after exhausting its oil reserves

E.       fund that they intend to sustain the state’s economy after oil reserves are exhausted

Alaska regularly deposits some of its profits from the sale of oil into a special fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves.

A.      fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves

B.       fund, the intention of which is to sustain the state’s economy after they have exhausted their oil reserves

C.      fund intended to sustain the state’s economy after oil reserves are exhausted

D.      fund intended to sustain the state’s economy after exhausting its oil reserves

E.       fund that they intend to sustain the state’s economy after oil reserves are exhausted

答案是什么啊？

Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.
                

A.      Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing. ＊them指代不清，逗号后面意思与前面没有逻辑关系。

A.      Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing. ＊them指代不清，逗号后面意思与前面没有逻辑关系。

B.       Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished. ＊of five之间需要定冠词the

C.      Vanished are nearly 99percent of the five hundred million different species of living creatures that appeared on Earth. ＊倒装后的意思很难懂。

D.      Of five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent of them have vanished. ＊of five之间缺少定冠词。

E.       Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.

Alaska regularly deposits some of its profits from the sale of oil into a special fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves.
                    

A.      fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves

B.       fund, the intention of which is to sustain the state’s economy after they have exhausted their oil reserves ＊they指代不清楚

C.      fund intended to sustain the state’s economy after oil reserves are exhausted ＊intended语态不对

D.      fund intended to sustain the state’s economy after exhausting its oil reserves ＊intended语态不对

E.       fund that they intend to sustain the state’s economy after oil reserves are exhausted＊they指代不清

Alaska regularly deposits some of its profits from the sale of oil into a special fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves.
            

A.      fund, with the intention to sustain the state’s economy after the exhaustion of its oil reserves

B.       fund, the intention of which is to sustain the state’s economy after they have exhausted their oil reserves ＊they指代不清楚

C.      fund intended to sustain the state’s economy after oil reserves are exhausted ＊intended语态不对

D.      fund intended to sustain the state’s economy after exhausting its oil reserves ＊intended语态不对

E.       fund that they intend to sustain the state’s economy after oil reserves are exhausted＊they指代不清

谢谢你详细的回答

第一题答案是E

但是第二题答案给的是C，很迷茫