请教OG-13

不好意思，忘了发题目了：

13. Defense Department analysts worry that the ability of the United States to wage a
prolonged war would be seriously endangered if the machine-tool manufacturing base shrinks
further. Before the Defense Department publicly connected this security issue with the import
quota issue, however, the machine-tool industry raised the national security issue in its petition
for import quotas.
Which of the following, if true, contributes most to an explanation of the machine-tool industry’s
raising the issue above regarding national security?
A. When the aircraft industries retooled, they provided a large amount of work for too
builders.
B. The Defense Department is only marginally concerned with the effects of foreign
competition on the machine-tool industry.
C. The machine-tool industry encountered difficulty in obtaining governmental protection
against imports on grounds other than defense.
D. A few weapons important for defense consist of parts that do not require extensive
machining.
E. Several federal government programs have been designed which will enable domestic
machine-tool manufacturing firms to compete successfully with foreign toolmakers.

谢谢P200002！

babypace，发贴前确实按本坛“发贴必读”搜索过，但显示没有找到我要查询的资料，或许是对携隐“发贴必读”中格式理解有误，待我再试试！

不好意思,請教一個問題有關OG 13的選項B.我了解C是正確.可是沒辦法理解OG上對B的解釋(如下).

OG的解釋是 B explains why the industry might not raise the security issue about import quotas,since it suggests that the Defense Department had no interest in import quotas whatsoever.

不過,正因為Defense Department不關心,tool industry才必須raise the seciruty issue(以便保護自己的利益.)而不像解釋裡所說的"might not raise the security issue."

是不是能請各位先進解惑,感激不盡!

各位先進,我貼的問題(上面那一個)是不是方式不對,所以沒人回?

第一次上來發問,如果方式不對請多包含指正,謝謝.