Sentence Correction

• most of them as large or larger than Jupiter, which circle
  
  most of them as large or larger than Jupiter and circling (correct option)
  
  most of them at least as large as Jupiter, circling
  
  mostly at least as large as Jupiter, which circle
  
  mostly as large or larger than Jupiter, circling

Q : Studies of the human "sleep-wake cycle" have practical relevance for matters ranging from duty assignments in nuclear submarines and air-traffic control towers to the staff of shifts in 24-hour factories.

(A) to the staff of
(B) to those who staff (my choice)
(C) to the staffing of (correct option) -> ranging from ... to staffing of (verb parallelism)
(D) and staffing
(E) and the staff of
all other choices affects parallelism or idiom usage.

Q. In the past several years, astronomers have detected more than 80 massive planets, most of them as large or larger than Jupiter, which circle other stars.

most of them as large (as) or larger than Jupiter, which circle -> wrong - the planets circle other stars not the jupiter.
most of them as large (as) or larger than Jupiter and circling -> wrong - as large as or larger than
most of them at least as large as Jupiter, circling - right (this seems right compared to the one above. Not sure though )
mostly at least as large as Jupiter, which circle -> wrong - mostly atleast, which circle
mostly as large or larger than Jupiter, circling -> wrong - mostly and as large as

bedazzled wrote:Hi


Q : Last spring a Colorado health department survey of 72 playgrounds in private child-care centers found unsafe conditions in 95 percent of them and they ranged from splinters to equipment near collapse.

(A) unsafe conditions in 95 percent of them and they ranged (my choice)here 'them' is ambigious since we can not underestand its antecedant is unsafe condition of child-care centres
(C) the ranging of unsafe conditions in 95 percent of them to be
(D) that 95 percent had unsafe conditions ranging (Correct Choice) "ranging from x to y" is a correct idiom
(E) that 95 percent of them had conditions that were unsafe; the range was


Q : The expected rise in the price of oil could be a serious impact to industrialized nations and severely diminish the possibility to have an economy free of inflation.
(A) be a serious impact to industrialized nations and severely diminish the possibility to have
(B) seriously impact on industrialized nations and severely impede the possibility to have
(C) seriously impact on industrialized nations and severely impede the possibility of having
(D) have a serious impact on industrialized nations and severely impede the possibility to have( my choice)
(E) have a serious impact on industrialized nations and severely diminish the possibility of having (correct choice)("possibility of" is a correct idiom)

u have to take all parts of sentence into account especially the right usage of idioms


Q : Studies of the human "sleep-wake cycle" have practical relevance for matters ranging from duty assignments in nuclear submarines and air-traffic control towers to the staff of shifts in 24-hour factories.

(A) to the staff of
(B) to those who staff (my choice) those does not have any specific antecedent
(C) to the staffing of (correct option) this is the only correct option left
(D) and staffing
(E) and the staff of
Doubt : from x to y is correct idiom then it should be from duty assignments ....to to those who staff...

Q : Most nations regard their airspace as extending upward as high as an aircraft can fly; no specific altitude, however, has been officially recognized as a boundary.

(A) as extending(correct choice)

(B) as the extent

(C) to be an extent

(D) to be an extension

(E) to extend (my choice)"regard X as y" is correct idiom

Doubt : isn't it like airspace to extent ...why extending


Q. In the past several years, astronomers have detected more than 80 massive planets, most of them as large or larger than Jupiter, which circle other stars.

• most of them as large or larger than Jupiter, which circle
  
  most of them as large or larger than Jupiter and circling (correct option)"and circling" is awkward
  
  most of them at least as large as Jupiter, circling (correct answer)here the circling is the rest of the main clause 'astronomers have detected more than 80 planets circling other stars' ... also we has as large as and larger than, instead the usage of :at least as large as" makes sense
  
  
  mostly at least as large as Jupiter, which circle
  
  mostly as large or larger than Jupiter, circling

[highlight]
Doubt : confused between b ,c &d[/highlight]





Q. One of Ronald Reagan's first acts as President was to rescind President Carter's directive that any chemical banned on medical grounds in the United States be prohibited from sale to other countries.

(A) that any chemical banned on medical grounds in the United States be prohibited from sale to other countries (correct answer)"directive that.... be prohibited" makes sense since it forms subjunctive mood of verb
(B) that any chemical be prohibited from sale to other countries that was banned on medical grounds in the United States
(C) prohibiting the sale to other countries of any chemical banned on medical grounds in the United States(correct option)the idiom here is not correct and the structure is a bit awkward
(D) prohibiting that any chemical banned on medical grounds in the United States is sold to other countries(my choice)It seems the sentence says chemicals banned in US should be sold to other countries.. prohibiting is really far away from its object
(E) that any chemical banned in the United States on medical grounds is prohibited from being sold to other countries

Wow those are quite a few questions in a single post. I will try to address them but may ask you for some clarifications on your doubts



Quote:
* Is it like when we are forming a sentence ...it should be [noun]+[verb] always

What did you mean exactly by this question? it should be [noun]+[verb] always -

As such it is not always necessary to put the verb immediately after noun. In fact, we see that verb seldom follows the noun immediately. For example:

A surge in house sales shows that the economy of this country is far away from recession.
Here surge -shows is the noun-verb pair.

Thing to remember is that the sentence, in order to be grammatically correct, must have a subject-verb pair that must agree in number. So you need to understand the sentence structure and the meaning of the sentence to determine the correct SV pair.