96-05-11, 96-01-40,PP2-2-7 求教

96-05-11

Although still underwater, Loihi Seamount, the newest Hawaiian island, _____ closer to the surface by frequent volcanic eruptions that add layers of lava to the island.

(A) brought

(B)   to be brought

(C) being brought

(D) is being brought

我知道答案只可能是D了,但是这是什么语法结构呀? 现在时的被动态应该是:IS BROUGHT吧?!!

96-01-40

For thousands of years, people have used some kind of refrigeration cooling beverages and

preserve edibles.

答案是C, 但我觉得B也是错的, 应该是KINDS OF 吧????

PP2-2-7

A common way to produce X-rays is                 electrons into a copper target.

A.fires B.fired C.by firing D.how to fire

答案是C,可我觉得D也不错呀!!!!

以上问题,特来请教各位牛兄牛弟牛J牛M.

For thousands of years, people have used some kind of refrigeration cooling beverages and preserve edibles.

C改 to cool.  use sth to do and to do

A common way to produce X-rays is                 electrons into a copper target.

A.fires B.fired C.by firing D.how to fire

省略后的结构是： way is _____ 方法是。。。方法不可能是个问题。