请教英语长难句

Question

For a while it looked as though the making of semiconductors, which America had invented and which sat at the heart of the new computer age,was going to be the next casualty.句子结构？which America had invented and which sat at the heart of the new computer age为the making of semiconductors的同位语，那么这个句子的主语是什么呢？it looked as though作什么成分？

Answer 1

主语：it为形式主语，the making of semiconductors为实际意义上的主语。
which America had invented and which sat at the heart of the new computer age是the making of semiconductors的定语而非同位语。
it looked as though是句子的（形式上）主谓结构。

全句分析如下：
For a while是时间状语
it是形式主语
looked是谓语
as though用于修饰谓语
the making of semiconductors是真正意义上的主语
which America had invented and which sat at the heart of the new computer age是两个并列的定语
was going to be the next casualty是系表结构

Answer 2

严格来说确实是病句而且重复，在第三个分句前要有and。
不过，语言是灵活的。这里为了加强语气，这样表达反而有力。
在书面表达要严谨的话，应该用分号——表示句式紧凑、意义紧凑。
He
is
a
good
friend;
he
is
a
good
husband;he
is
a
good
man.

Answer 3

这个句子有省略，完整的句子是:
They
look
at
an
organic
being
as
a
savage
looks
at
a
ship，as
"a
savage
looks"
at
something
wholly
beyond
his
comprehension.
as这里是“象...一样，如同...一样”
at
a
ship的at是跟在前面的looks后的，只不过这里的looks省掉了，所以看起来at孤孤单单不知所云了。
his指代的是the
savage's
译文:
他们看着一个有机生物，就象一个未开化的野蛮人看着一条船或什么其它完全超出他的理解力的东西一样。