gwd10-38

bijinjing

为什么没人回答呢？

jbc88

有没有人能回答我的我的顾虑~~虽然前人都说D by friench scientist attemping 是方法，但这么理解，变成了引进 gypsy moths 通过by```这个方法，这显然是不对的，我觉得只能理解为by scientist， 这样的话后面的attemping~~~和A 的in an attempt 一样存在逻辑错误，主语变成了mouth。我觉得虽然c很多小错误，但是选项中唯一主语一致的~~对于答案D真的不是很理解，请大家指教

-- by 会员 bijinjing (2010/9/2 14:45:35)

D怎么主谓不一致？

wildmantomba

有没有这样的可能性呢
The gypsy moth was imported into Massachusetts from Europe in 1869 by a French scientist attempting（who is attempt 省略who is 改成ing形式） to develop a strong strain of silk-producing insects by crossing gypsy moths with adult silkworms.（作为限制性定语从句修饰a French scientist）

lcyalexa

The agent of a COMMA + VERBing modifier must be the SUBJECT OF THE PRECEDING CLAUSE.
A: The gypsy moth was used, crossing gypsy moths with adult silkworms.
Here, COMMA + crossing seems to refer to the gypsy moth (the subject of the preceding clause), implying that THE GYPSY MOTH was CROSSING gypsy moths with adult silkworms.
Not the intended meaning.
Eliminate A.

An introductory VERBed modifier must refer to the SUBJECT OF THE FOLLOWING CLAUSE.
B: Imported into Massachusetts from Europe in 1869, a French scientist...
Here, imported seems to modify a French scientist (the subject of the following clause), implying that A FRENCH SCIENTIST was IMPORTED into Massachusetts.
Not the intended meaning.
Eliminate B.

A introductory VERBing modifier must serve to express an action that is CONCURRENT with the main verb.
C: In attempting the development of a strong strain of silk-producing insects, a French scientist in 1869 imported the gypsy moth.
Here, the implication is that a French scientist was ATTEMPTING as he IMPORTED.
Not the intended sequence.
Clearly, the moth had to be imported BEFORE the scientist could attempt to develop the strain of insects.
Eliminate C.

In E, the subject (a French scientist) lacks a verb.
The result is a sentence fragment.
Eliminate E.