请教几道语法题

1.[Melting] glaciers may [account the] rise [in sea level] that [has taken place] honing this century.
答案：b

２.Salt is manufactured in quantities that exceed those of most,.......,other commercial chemicals.
A.of an not
B.not if an are
C.are not an
D.if not an
答案： d

3.Thunder can be [listened] from a [maximum] distance of about ten miles [except] under [unusual] atmospheric conditions.
答案：a

希望能得到解答，感谢

２.Salt is manufactured in quantities that exceed those of most,.......,other commercial chemicals.
A.of an not
B.not if an are
C.are not an
D.if not an
答案： d

楼主这道题有问题吧？an前后是不是还有其他成分？我怎么看不懂着几个选项啊。

3.Thunder can be [listened] from a [maximum] distance of about ten miles [except] under [unusual] atmospheric conditions.
答案：a

"listened" should be "heard"  楼主看看朗文词典里关于这两个词的解释就会明白了。

感谢感谢，呵呵，你这解答我清楚多了

第二个我是原文复制过来的，看了一下还是这样的，所以我是更不明白，呵

谢谢你

我知道这道题什么意思了，an 肯定是 any（估计题目输入的时候有点错误，我下载的真题也有类似的拼写错误），所以答案应该是 if not any