Few tricky problems

[Atesttaker]

1. Not until the eighteenth century------------ the complex chemistry of metallurgy
(A)         when scientists began to appreciate
(B)          did scientists begin to appreciate
(C)         scientists who were beginning to appreciate
I think its a negative type inversion,therefore auxially verb should be preceded by the subect like here in this case did is preceded by scientists in option B.

2. .......... 1810, water-powered textile manufacturing arrived in New Hampshire with the founding of a company in Manchester that manufactured cotton and wool.
(A)          Early
(B)           In the early
(c)          As early as
(d)           When early
 Whats wrong with the option B?

3.     Lichens grow extremely well in very plants can cold parts of the world survive.
(A)   where few other
(B)   few others
(C)   where do few others
(D)  there are few others

This problem went over my head.

4．[Native to] South America and [cultivated] there for thousands of years, the peanut [is] said to[ have introduced] to North America by early explorers .


Hmmmm something wrong there with have introduced?

5-Among the symptoms of measles, which takes about twelve days to incubate, [are] a high fever, swelling of glands in the neck, a cough, and sensitive to light.
Something wrong with are in the sentence.
                                            
6 -There are about 350 species and subspecies of birds in danger of become extinct,  with a large number of them, 117 in all, found on oceanic islands.
 oh well I thought the problem is with the pronoun them? but my key says become is wrong. My key might be wrong?

 

[MikeNewYork]

1. Not until the eighteenth century------------ the complex chemistry of metallurgy
(A)         when scientists began to appreciate
(B)          did scientists begin to appreciate
(C)         scientists who were beginning to appreciate
I think its a negative type inversion,therefore auxially verb should be preceded by the subect like here in this case did is preceded by scientists in option B.

Actually "did" is followed by "scientists"; "scientists" is preceded by "did". Answer B is correct.

2. .......... 1810, water-powered textile manufacturing arrived in New Hampshire with the founding of a company in Manchester that manufactured cotton and wool.
(A) Early
(B) In the early
(c) As early as
(d) When early
Whats wrong with the option B?

"In the early" is used before a a decade, a century etc., not before a year. It could be "In early 1810" or "In the early part of 1810", but not "In the early 1810".

3. Lichens grow extremely well in very plants can cold parts of the world survive.
(A) where few other
(B) few others
(C) where do few others
(D) there are few others

This problem went over my head.

I don't blame you. This should be "Lichens grow extremely well in cold parts of the world, where few other plants can survive."

4．[Native to] South America and [cultivated] there for thousands of years, the peanut [is] said to[ have introduced] to North America by early explorers .


Hmmmm something wrong there with have introduced?

The peanut did not do the introducing; the peanut was said to "have been introduced". This is passive voice. It details something that happened to the peanut.

5-Among the symptoms of measles, which takes about twelve days to incubate, [are] a high fever, swelling of glands in the neck, a cough, and sensitive to light.
Something wrong with are in the sentence.

The problem is "sensitive". All the other items in that series are nouns: fever, swelling, and cough. The last should be "sensitivity".
                                            

6 -There are about 350 species and subspecies of birds in danger of become extinct,  with a large number of them, 117 in all, found on oceanic islands.
 oh well I thought the problem is with the pronoun them? but my key says become is wrong. My key might be wrong?

"Become" is wrong; it should be "becoming". Because it follows the preposition "of", the word must be a noun. "Becoming" is a gerund-noun and the object of "of".

 

[Atesttaker]

5-Among the symptoms of measles, which takes about twelve days to incubate, [are] a high fever, swelling of glands in the neck, a cough, and sensitive to light.
Something wrong with are in the sentence.


The problem is "sensitive". All the other items in that series are nouns: fever, swelling, and cough. The last should be "sensitivity".

well I guessed the same mistake but my reference says "are" should be corrected.Bye the way why "takes" is used here and not "take".
Rest are fine with me now. Thanks[/quote]

 

[MikeNewYork]

5-Among the symptoms of measles, which takes about twelve days to incubate, [are] a high fever, swelling of glands in the neck, a cough, and sensitive to light.
Something wrong with are in the sentence.


The problem is "sensitive". All the other items in that series are nouns: fever, swelling, and cough. The last should be "sensitivity".

well I guessed the same mistake but my reference says "are" should be corrected.Bye the way why "takes" is used here and not "take".
Rest are fine with me now. Thanks

[/quote]

The reference is not correct. The subject of the sentence is "symptoms" and that is plural. The verb "takes" is used because "measles", though in plural form, is a singular noun. It is a single disease. This singualr noun is the antecedent of "which", so "which" takes a singular verb.