请教大家几道语法题，谢谢大家了！：）

Amelia_He

0505

10.Type metal used in the printing industry varies in its components -------is generally a combination of lead, tin and antimony.

(A) as

(B) if

(C) why

(D) but

 

答案选D。我不太明白，能帮我解释一下吗？

 

15, Four flags have flown over the Palace of the Governors in Santa Fe, New Mexico: ------ Spain, Mexico, the Confederacy, and the United States.

(A) which of

(B) of mose being

(C) those of

(D) Those that of

 

答案选C。我猜对了，但不太懂是为什么？这句话是什么意思呢？

 

34. One of the most powerful tools available to labor unions has been the ability to strike in order to settle
     its disputes with management.

 

答案选D。这道题我还是不明白！好郁闷啊！

 

请大家帮忙看看吧！

[此贴子已经被作者于2006-8-12 15:47:12编辑过]

Amelia_He

哦，我明白了！谢谢你！