请高人指点几道题,多谢

手中的星星UID：2228236

请高人指点几道题,多谢面对这几道错题,绞尽脑汁液想不出所以然,请求高人指点,多谢!!!
其中黄色的正确答案, 红色的是我做的答案,望大家能指出错误选项的错误



98.  ？？？Although the manager agreed to amore flexible work schedule, he said that it must be posted on the bulletinboard so that both management and labor will know what everyone is assignedto do.
        (A) he said that it must be posted on the bulletinboard so that both management and labor will know what everyone is
        (B) he said it had to be posted on thebulletin board so that both management and labor knows what everyone is
        (C) he said that they would have to post theassignments on the bulletin board so that management and labor knew whateveryone was
        (D) hesaid that the schedule would have to be posted on the bulletin board so thatboth management and labor would know what everyone was（A）
        (E) saying that the schedule had to be postedon the bulletin board so that both management and labor would know whateveryone had been
         
        81. ？？？Although fruit can no longer grow once it is picked, it continuesfor some time to respire, taking in oxygen and giving off carbon dioxide, similarto the way human beings breathe.
        (A) similar to the way human beings breathe
        (B) similarly tohuman beings who are breathing
        (C) just like thebreathing of human beings
        (D) as humanbeings when breathing（E）
        (E) just as humanbeings do when they breathe
        78. ？？？Although dozens of New York’s smallmuseums are either devoted to local history or various ethnic groups, there aremany one-of-a-kind museums from Manhattanto the Bronx                        that areopen for exploration on summer weekends.
        (A) Althoughdozens of New York’ssmall museums are either devoted to local history or various ethnic groups,there are
        (B) Although dozens of New  York’s small museums are devoted to local history orvarious ethnic groups,
        (C) Dozens of New York’s small museumsare devoted to local history or various ethnic groups, but there are
        (D) Dozens of New York’s small museumsare devoted to local history or various ethnic groups, and there are also（D）
        (E) Devoted tolocal history or various ethnic groups, dozens of New York’s small museums and also
请问此题A.C为何不行呢?
        54. ???According to United StatesAir Force officials, a cannon shooting dead chickens at airplanes has provedhelpful to demonstrate what kind of damage can result when jets fly into aflock of large birds.
        (A) shooting deadchickens at airplanes has proved helpful to demonstrate
        (B) shooting deadchickens at airplanes has proved itself helpful as a demonstration of
        (C) shooting deadchickens at airplanes proves itself helpful as demonstrating
        (D) that shoots dead chickens at airplanes proves itself helpful todemonstrate（E）
        (E) that shootsdead chickens at airplanes has proved helpful in demonstrating
        ???According to the National Pasta Association, per-capita consumption of pasta inthe United States,which has already been approaching 19 pounds a year, will achieve 30 pounds ayear by the twenty-first century.
        (A) According to the National Pasta Association, per-capita consumptionof pasta in the United  States, which hasalready been approaching 19 pounds a year, will achieve 30 pounds a yearby the twenty-first century.
        (B) Alreadyapproaching 19 pounds a year in the United States, the National PastaAssociation predicts that per-capita consumption of pasta will reach 30 poundsa year by the twenty-first century.
        (C) The NationalPasta association predicts by the twenty-first century that per-capitaconsumption of pasta in the United  States, which is already approaching 19pounds a year, will reach 30 pounds a year.
        (D) By thetwenty-first century, the National Pasta Association predicts that per-capitaconsumption of pasta in the United  States, having already approached 19 poundsa year, will reach 30 pounds a year.（E）
        (E) According tothe National Pasta Association, per-capita consumption of pasta in the United States is already approaching 19 pounds a year and willreach 30 pounds a year by the twenty-first century.
        47. ??According to some analysts,whatever its merits, the proposal to tax away all capital gains onshort-term investments would, if enacted, have a disastrous effect on WallStreet trading and employment.
        (A) its merits,the proposal to tax
        (B)its merits may be, the proposal of taxing
        (C) its merits asa proposal, taxing
        (D) the proposal’smerits, to tax（A）
        (E) the proposal’smerits are, taxing
         
        10. ？？？A large rise in the number of housing starts in the coming yearshould boost new construction dollars by several billion dollars, making theconstruction industry’s economic health much more robust than five years ago.
        (A) making the construction industry’s economic health much more robustthan five years ago
        (B) and make theconstruction industry’s economic health much more robust than five years ago
        (C) making theconstruction industry’s economic health much more robust than it was five yearsago
        (D) to make theconstruction industry’s economic health much more robust than five years ago（C）
        (E) in making theconstruction industry’s economic health much more robust than it as five yearsago

ayu.prosinicUID：2312958

学习中~

ariesmarsUID：2277164

98.  ？？？Although the manager agreed to amore flexible work schedule, he said that it must be posted on the bulletinboard so that both management and labor will know what everyone is assignedto do.
        (A) he said that it must be posted on the bulletinboard so that both management and labor will know what everyone is[ said/say/remark表示某人说过的话，其后可以使用一般现在时]
        (B) he said it had to be posted on thebulletin board so that both management and labor knows what everyone is [ said 引导的宾语从句前面的that 不能省略，宾语从句里面时态混用错误]
        (C) he said that they would have to post the assignments on the bulletin board so that management and labor knew what everyone was [ they 没有指代对象]
        (D) he said that the schedule would have to be posted on the bulletin board so that both management and labor would know what everyone was（A）[have to 用在生物体上，must无此限制]
        (E) saying that the schedule had to be postedon the bulletin board so that both management and labor would know what everyone had been [没有主语]

ariesmarsUID：2277164

81. ？？？Although fruit can no longer grow once it is picked, it continues for some time to respire, taking in oxygen and giving off carbon dioxide, similar to the way human beings breathe.
        (A) similar to the way human beings breathe 表示像。。什么的时候，Gmat使用like,as不使用similar,similarly
        (B) similarly to human beings who are breathing
        (C) just like the breathing of human beings [ like 比较对象不对等，方式不能和呼吸这件事情相比]
        (D) as human beings when breathing（E）[ as引导一个句子表示比较的时候]
        (E) just as human beings do when they breathe

ariesmarsUID：2277164

78. ？？？Although dozens of New York’s small museums are either devoted to local history or various ethnic groups, there are many one-of-a-kind museums from Manhattan the Bronx that are open for exploration on summer weekends.
        (A) Although dozens of New York’s small museums are either devoted to local history or various ethnic groups, there are [ either的位置不对，应该放在local前面]
        (B) Although dozens of New  York’s small museums are devoted to local history or various ethnic groups,  [ 逗号后面不是一个完整的句子]
        (C) Dozens of New York’s small museums are devoted to local history or various ethnic groups, but there are
        (D) Dozens of New York’s small museums are devoted to local history or various ethnic groups, and there are also（D）
        (E) Devoted tolocal history or various ethnic groups, dozens of New York’s small museums and also

请问此题A.C为何不行呢?[ 这题是考的题意吧，根据大案来分析，他要表达的是一个并列关系，所以Ac表达的让步和转折的意思就不对吧！]

ariesmarsUID：2277164

54. ???According to United StatesAir Force officials, a cannon shooting dead chickens at airplanes has proved helpful to demonstrate what kind of damage can result when jets fly into aflock of large birds.
        (A) shooting dead chickens at airplanes has proved helpful to demonstrate
        (B) shooting dead chickens at airplanes has proved itself helpful as a demonstration of
        (C) shooting dead chickens at airplanes proves itself helpful as demonstrating
        (D) that shoots dead chickens at airplanes proves itself helpful todemonstrate（E）
        (E) that shoots dead chickens at airplanes has proved helpful in demonstrating
这题主要考helpful的用法，help主要三种用法：1 help to do  help do 2 help sb. to do
3 helpful in doing sth.

ariesmarsUID：2277164

???According to the National Pasta Association, per-capita consumption of pasta in the United States, which has already been approaching 19 pounds a year, will achieve 30 pounds a year by the twenty-first century.
        (A) According to the National Pasta Association, per-capita consumption of pasta in the United  States, which has already been approaching 19 pounds a year, will achieve 30 pounds a year by the twenty-first century.[which修饰对象不对，应该修饰consumption]
        (B) Already approaching 19 pounds a year in the United States, the National Pasta Association predicts that per-capita consumption of pasta will reach 30 pounds a year by the twenty-first century. [从句使用approaching,主语必须是consumption，这里逻辑意思不对]
        (C) The National Pasta association predicts by the twenty-first century that per-capita consumption of pasta in the United  States, which is already approaching 19pounds a year, will reach 30 pounds a year. [by the twenty-first century 应该放在宾语从句里面，放在这里错误的修饰了整个句子，同A，which修饰对象不对，这里修饰了States,which不能跳跃修饰consumption]
        (D) By the twenty-first century, the National Pasta Association predicts that per-capita consumption of pasta in the United  States, having already approached 19 poundsa year, will reach 30 pounds a year.（E）[having already approached 19 pounds a year 这种表示方法是错误的，还有By the twenty-first century修饰整个句子不对，因该放在predict后面的从句里面
        (E) According to the National Pasta Association, per-capita consumption of pasta in the United States is already approaching 19 pounds a year and will reach 30 pounds a year by the twenty-first century.

ariesmarsUID：2277164

47. ??According to some analysts, whatever its merits, the proposal to tax away all capital gains on short-term investments would, if enacted, have a disastrous effect on Wall Street trading and employment.
        (A) its merits, the proposal to tax
        (B)its merits may be, the proposal of taxing[情态动词不能随便添加]
        (C) its merits as a proposal, taxing [its指代taxing,改变原句的意思]
        (D) the proposal’s merits, to tax（A） [ 改变句子的主语，改变了句子的意思]
        (E) the proposal’s merits are, taxing  同D

ariesmarsUID：2277164

10. ？？？A large rise in the number of housing starts in the coming year should boost new construction dollars by several billion dollars, making the construction industry’s economic health much more robust than five years ago.
        (A) making the construction industry’s economic health much more robust than five years ago [比较结构不完整，这里不能省略it was, 废话哈，从句子意思表达的清晰上看的话，C要比A好，句子比较结构的省略要非常谨慎，希望有人能告诉你为什么，我是把AC比较来的，理论上不清楚]
        (B) and make the construction industry’s economic health much more robust than five years ago[making]
        (C) making the construction industry’s economic health much more robust than it was five years ago
        (D) to make the construction industry’s economic health much more robust than five years ago（C）[making]
        (E) in making the construction industry’s economic health much more robust than it as five years ago[making]