请教96.10的两道语法题

ecsniffer

38、A number of the Pacific Islands are volcanoes that have pushed up from the ocean floor,others are the tops sunken mountain ranges.

答案为tops sunken错，but why?

39、It has been reported that during any twenty-four hour period, a minimal of three hundred North American women start their own businesses.

答案为a minimal of错，but why?

真老九

38.  tops of....

39. a minimum of...

ecsniffer

以下是引用ecsniffer在2004-4-3 22:57:00的发言：

38、A number of the Pacific Islands are volcanoes that have pushed up from the ocean floor,others are the tops sunken mountain ranges.

答案为tops sunken错，but why?

thks,真老九

再问一句，这个句子是个run-on sentence呀，这在gmat中有严重的语法错误呢

怎么能把两个句子中间不加任何连词并列在一起呢？

真老九

看起来有点问题，会不会是印刷问题？

yellowdriver

奇怪，正想问这个，没人知道么？