[求助]急问语法五道！！！

summer614

according to public health officials , in 1998 massachusetts became the first state in which more babies were born to women over the age of thirty than under it

than born

than born

than they were

than there had been

than had been born

A

Emily dickinson’s letters to susan Huntington Dickinson were written over a period beginning a few years before susan’s marriage to emily’s brother and ending shortly before emily’s death in 1886 , outnumbering her letters to anyone else

Dickinson, which were written over a period beginning a few years before susan’s marriage to emily’s brother and ending shortly before emily’s death in 1886 , outnumber

B

in an attempt to guarantee the security of its innovative water purification method , the company required each employee to sigh a confidentiality agreement prohibiting that its water purification methods be disclosed to companies using an analogous purification process

progibiting them from the disclosing of its water purification methods to any company

prohibiting desclosure of its water purification methods to any company

that would prohibit them from disclosure of its water purification methods to companies

that would prohibit its water purification methods to be disclosed to a company

E

whereas lines of competition are clearly defined in the more established industries, in the internet industry they are blurred and indistinct , as companies that compete one day may be partners the next

although the lines of competition are clearly defined in industries that are more established, they are blurred and indistinct in the internet industry , as competing companies

the lines of competition are clearly defined in the more established industries, unlike the internet where they are blurred and indistinct , as companies that compete

unlike more established industries, where the lines of competition are clearly defined, they are blurred and indistinct in the internet industry, as companies that compete

unlike more established industries, with clearly defined lines of competition, those of the internet industry are blurred and indistinct, as competing companies

第二个

over the course of the eighteenth century , the average  output of ironwork tripled as a result of several improvements in blowing machinery and because coal replaced charcoal as the fuel used in the smelting of iron ore

over the course of the eighteenth century a tripling in the average output of ironwork was due to the replacement of charcoal by coal for the fuel used in the smelting of iron ore, in addition to several improvements in blowing machinery

with charcoal’s being replaced by coal as the fuel used in the smelting of iron ore and several improvements in blowing machinery , the average output of ironwork tripled over the eighteenth century

最后一个

summer614

拜托那位兄弟给解答一下！

mariezhu

1. than (to women) under it

2. 找主谓宾的问题，A是个run－on sentence， 应该是letters, which were written (during a certain time), outnumber letters to anyone else

3. 确定题目或是答案正确么？prohibit 。。to可是official guide 第719页第100题明确认为是unidiomatic的呀？！这个我也不知道，问大牛吧

4。B的平行结构完美，are clearly defined in industries.. //  are blurred and indistinct in..industrie; competing companies one day // partners the next。 CDE全是dangling modifier的问题, A的平行结构有问题，whereas也值得商榷

5。A中的over the course不够简洁，其实over就完全可以了；B中使用in addition to..两个原因原本的并列关系发生改变

小建议：下次把5题分开贴，得到的反馈率肯定更高，要不然5题一起实在是太多了，大家没耐心啊。