请各位英语高手帮我详细解答下下面几道英语题目？万分感谢！
英语不懂的题目
1、 some companies have introduced flexible working time with less emphasis on pressure ( )
A、than more on efficiency B、and more efficiency
C、but more on efficiency D、than efficiency
答案是C
2、X-ray are able to pass through objects and thus make ( )details that are otherwise impossible to observe
A、it visible B、them visible C visible D、they are visible
答案是C
3、even though she herself has never had such an experience, it’s ( )
she can recognize from what has happened to her good friend .
A、that B、one C such D、all
答案是C
4、Primary products are the raw materials
______ which manufactured goods are made.
A.by
B.of
C.from
D.in
答案是C，该句子的意思？
5、______is
that I can’t understand what she is talking about.
A.What I find difficult
B.What I find it difficult
C.How difficult I find
答案是A
D.How difficult I find it
6.By
referring______his notes, the speaker was able to give the exact details
required.
A.to
答案是A
B.for
C.as
D.in
7.Unfortunately, he didn’t ______ to read the agreement
carefully before signing it.
A.bother
答案是A
B.disturb
C.occur
D.happen
8、The
child was ______ to open the window.
A.tall
barely enough
答案是C
B.barely
enough tall
C.barely tall enough
D.tall
enough barely
9、______
the strength of the opposition , we did very well to score two goals.
A.To
consider
B.Considered
C.Considering
D.Consider
答案是C
2，detais是名词，在这里，前面用形容词就好了，visible details 又作为了定语从句的先行词，不是别的什么从句，不用多加什么东西
3，表方式，那样
4，初级产品是未加工的一些材料，制成品就是由它们做的。考查be made from
5，句子缺主语，考的主语从句，what引导。B选项，it多余
6，refer to 固定搭配，参考
7，bother to do 费心去做 看意思
8，enough修饰形容词要后置的。barely 副词，仅仅，勉强，就像just一样，放在形容词前面
9，这个状语从句怎么说呢，反正这种情况都把动词用现在分词结构。
个人见解。
