两道GWD难题比较，请NN发表高见！

howardwang

When a ton of wheat was being moved from Buffalo to New York City before the opening of the Erie Canal in 1825, it took three weeks and cost $100, but when the canal was used, it took less than eight days and cost less than $6.
A. When a ton of wheat was being moved from Buffalo to New York City before the opening of the Erie Canal in 1 825, it took three weeks and cost $100, but when the canal was used, it

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B. Moving a ton of wheat from Buffalo to New York City before the opening of the Erie Canal in 1825, it took three weeks and cost $100; using the canal, it
C. Before the opening of the Erie Canal in 1825, moving a ton of wheat from Buffalo to New York City took three weeks and cost $100; on the canal the move
D. In 1825, before opening the Erie Canal, to move a ton of wheat took three weeks from Buffalo to New York City, which cost $100; moving it on the canal
E. To move a ton of wheat in 1825 from Buffalo to New York City took three weeks before the opening of the Erie Canal, costing $100, but in using the canal, the move

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Researchers have announced that the magnetic fields emitted by one manufacturer’s security surveillance system, of which type there are 200.000 worldwide, can interfere with pacemakers and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.
A. of which type there are 200,000 worldwide, can interfere with pacemakers and that
B. of which, worldwide, there are 200,000 of that type, and which can interfere with pacemakers, and
C. of which type there are 200,000 worldwide, they can interfere with pacemakers and
D. 200,000 of which type exist worldwide, interfering with pacemakers, and
E. 200,000 of that type existing worldwide and can interfere with pacemakers, and

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第一题给的答案是C；第二题是D。

这两题有个共同的特点，就是后面的名词指代（这个词用的不好）前面的动词的分词形式（比如第一题的moving与the move）。

从第一题各选项的比较中发现，只有C是比较好的选项，也就是说，这种不太常见的指代方式，在gmat中是允许的。

但是，对第二题还有些疑问：

到底Researchers have announced的是两件事（选A）：that the magnetic fields emitted by one manufacturer’s security surveillance system, of which type there are 200,000 worldwide, can interfere with pacemakers 和 that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

还是一件事（选D）：the magnetic fields……. and this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

哪个更符合逻辑呢？

而the magnetic fields can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting. 符合逻辑吗？

请NN们发表高见！谢谢！

[此贴子已经被作者于2005-11-23 8:26:58编辑过]

howardwang

UP

淡蓝色的回忆

When a ton of wheat was being moved from Buffalo to New York City before the opening of the Erie Canal in 1825, it took three weeks and cost $100, but when the canal was used, it took less than eight days and cost less than $6.
A. When a ton of wheat was being moved from Buffalo to New York City before the opening of the Erie Canal in 1 825, it took three weeks and cost $100, but when the canal was used, it

B. Moving a ton of wheat from Buffalo to New York City before the opening of the Erie Canal in 1825, it took three weeks and cost $100; using the canal, it
C. Before the opening of the Erie Canal in 1825, moving a ton of wheat from Buffalo to New York City took three weeks and cost $100; on the canal the move
D. In 1825, before opening the Erie Canal, to move a ton of wheat took three weeks from Buffalo to New York City, which cost $100; moving it on the canal
E. To move a ton of wheat in 1825 from Buffalo to New York City took three weeks before the opening of the Erie Canal, costing $100, but in using the canal, the move

支持C，

B，中moving 感觉是it 发出的动作。不对。

淡蓝色的回忆

Researchers have announced that the magnetic fields emitted by one manufacturer’s security surveillance system, of which type there are 200.000 worldwide, can interfere with pacemakers and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.
A. of which type there are 200,000 worldwide, can interfere with pacemakers and that
B. of which, worldwide, there are 200,000 of that type, and which can interfere with pacemakers, and
C. of which type there are 200,000 worldwide, they can interfere with pacemakers and
D. 200,000 of which type exist worldwide, interfering with pacemakers, and
E. 200,000 of that type existing worldwide and can interfere with pacemakers, and

支持D，

A中 can 是type 发出的动作, 与there are 不能并列呀！

howardwang

以下是引用淡蓝色的回忆在2005-11-22 21:19:00的发言：

Researchers have announced that the magnetic fields emitted by one manufacturer’s security surveillance system, of which type there are 200.000 worldwide, can interfere with pacemakers and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.
A. of which type there are 200,000 worldwide, can interfere with pacemakers and that
B. of which, worldwide, there are 200,000 of that type, and which can interfere with pacemakers, and
C. of which type there are 200,000 worldwide, they can interfere with pacemakers and
D. 200,000 of which type exist worldwide, interfering with pacemakers, and
E. 200,000 of that type existing worldwide and can interfere with pacemakers, and

支持D，

A中 can 是type 发出的动作, 与there are 不能并列呀！

谢谢蓝第。

如果选A的话，就是两个宾语从句并列。第一个从句的主语是magnetic fields ，谓语是can interfere ；第二个从句的主语是this interaction ，谓语是 can bring 。也就是说，Researchers have announced 的是两件事情，that....和that....

如果选择D的话，则Researchers have announced是一件事情，即the magnetic fields and this interaction (共同成为主语)can bring on （谓语）missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.
所以，我觉得是否从逻辑上，只有this interaction 才是谓语（can bring on） 动作合理的唯一发出者呢？

而且,D中的exist用法也不好。

zx_nju

A

mygrace

First one

A. "it" has no referent, "was being" is not neccessary

B. in " it took three", it is redundant

C. best

D. "which cost $100" is wrong

E. "To move" should be "moving",

"costing $100" is not correct,

"in using the canal" in is redundant

Second

A is correct

realmay

second

prefere A.

D seems illogical .

by the way , i'm not niuren  

howardwang

谢谢各位回复！

继续讨论！

tropicalfish

(1) C

(2) A