一个语法现象ETS自已也是前后矛盾的，885-A-5及885-A-6，求教！

在重看大全时发现这前后两题都出现了one of + 复数名词的现象，但是后面谓语却不一样，请看：

5.      With its abundance of noun inflections, Icelandic is one of several Germanic languages that is compact when written but can lengthen considerably when translated into English.

(A) is compact when written but can lengthen considerably when translated into English

(B) are compact when they are written, but they can lengthen considerably when they are translated in English

(C) is compact when written but can lengthen considerably when being translated into English

(D) are compact when written but can lengthen considerably in English translation（D）

(E) is compact when it is written but can lengthen considerably when translated in English

在本题中答案选D我觉得没有问题，用are compact...

6.      One of Arthur Jessop’s first acts as president of the FHA was to deny a request from the private sector that federal home loan programs should be expanded to cover houses not conforming to civil construction codes.

(A) should be expanded to cover houses not conforming to

(B) be expanded to cover houses not conforming to

(C) should be expand to cover houses not conforming with

(D) would have been expanded to cover houses not conforming to（B）

(E) had to be expanded to cover houses not conforming with

但奇怪的是这题未划线部分One of Arthur Jessop’s first acts as president of the FHA was to deny...其中的谓语动词居然用了was，真是不可理解啊！！

麻烦大牛解释一下！！

5. one of languages that are ...

   that 定语从句修饰 languages, 所以是 pl. are

6. one of AJ's acts was 的中心是 one act。 整个句子不是想表达 AJ 所有的 acts 的共性的，而是表达其中之一的特性。所以谓语要和 one 保持一致。

One of my friends is serving in the NAVY.