<p>Some scientists believe that mentally stimulating activites may increase the number of brain cells available to replace if any are lost through aging.</p>
<p>A. available to replace if any
B. available to replace any that
C. available, which replaces any that
D. available, replacing if any
E. available, they replace any which</p>
<p>The rescuers reached the the skiers, found them apparently unharmed, but they neverthrless were taken to the hospital for observation
A. skiers, found them apparently unharmed, but they nevertheless were taken
B. skiers, finding them apparently unharmed, and nevertheless taking them
C. skiers, who were foiund apparently unharmed, nevertheless taking them
D. skiers and found them apparently unharmed but nevertheless took them
E. skiers, apparently found unharmed, but nevertheless were taken</p>
<p>Sugar Alchohols-suar substitutes used in various brands of sugar- free chewing gum- do not cause tooth decay, however, they contain calories
A. decay, however, they contain calories
B. decay, they contain calories though
C. decay; althought they contain calories
D. decay yet contain calories in them
E. decay but do contain calories</p>
<p>The agency reports that by rigoruously enforcing state regulations udustrial piollution has been succesfully reduced to acceptable levels
A. industrial pollution has been succesfully reduced to acceptable levels
B. acceptable levels of industrial pollution have been succesfully reduced
C. a reduction of industrial pollution to acceptable levels has succeded
D. they have succeeded to reduce industrial polution to acceptable levels
E. it has succeeded in reducing industrial pollution to acceptable levels
( on a side not some of the conjuctions do not have commas right before them. Why is that?)</p>
<ol>
<li>B</li>
<li>D</li>
<li>C</li>
<li>D</li>
</ol>
<p>This is what I got, but I doubt they are all correct.</p>
<ol>
<li>B</li>
<li>D</li>
<li>C</li>
<li>E</li>
</ol>
<p>Although writing is my weakest SAT section, so at least half of them are probably wrong.</p>
<p>Here are the correct answers:
- B
- D (there should be a comma before “but”)
- E
- E</p>
<p>Explanations (with the grammatically corrected sentences in quotes):
1.
“Available” expresses the state of the cells, “to replace” expresses the purpose of the available cells, and “any that are lost through aging” is the object of the replacement (what is being replaced). “Any” refers to “brain cells” directly.</p>
<ol>
<li><p>
There are 3 clauses here:
a) The rescuers reached the skiers.
b) The rescuers found the skiers apparently unharmed.
c) The rescuers nevertheless took the skiers to the hospital for observation.
In clauses b and c, “skiers” should be replaced with the pronoun “them” since the referent was introduced in clause a. Clauses a and b are connected by the conjunction and because the two clauses are very relative in meaning and importance. These two clauses are in turn connected with a comma and the conjunction but to clause c, for clause c contains an opposing idea.</p></li>
<li><p>
a) Sugar Alcohols do not cause tooth decay.
b) Sugar Alcohols do contain calories.
The conjunction but connects two clauses while maintaining the subject (so you don’t have to repeat it): Sugar Alcohols do not cause tooth decay but do contain calories. A similar conjunction is and: I ate a lot and drank very little. It’s very simple actually. (C) is wrong because such a structure is unnecessary and not as economical. Generally the conjunction “although” is used in dependent clauses near the beginning: “Although they contain calories, they do not cause tooth decay.” But that changes the meaning somewhat by switching the order of the clauses. (E) is a much better choice.</p></li>
<li><p>
“It” refers to the agency. The original sentence (“industrial pollution has been…reduced”) uses the passive voice; instead of saying that the agency reduced industrial pollution, it says that industrial pollution has been reduced. This is unfavorable especially when the subject (“the agency”), the cause of the pollution, can be easily referred to with the pronoun “it.” (D) is wrong because it incorrectly uses the plural pronoun “they”–“agency” is singular.</p></li>
</ol>
<p>The answer for the question with the rescuers and skiers is "D. skiers and found them apparently unharmed but nevertheless took them,‘’ there is no comma after but in the answer</p>
<p>I am not sure if it needs a comma, but it would be favorable I think. Nonetheless, the SAT doesn’t test whether a comma should be included or excluded in situations like this so it doesn’t matter.</p>
<p>Ok, i just was confused with this because I thought a comma was needed before every conjuction?</p>
<p>No. “Because” is a conjunction and you don’t need a comma before it. Generally in long sentences a comma should be put before conjunctions like and, but in short sentences they may be able to be excluded. (Notice how I had a comma before but in my previous sentence. Commas aren’t really relevant on the SAT.)</p>
<p>The rescuers reached the skiers and found them apparently unharmed but nevertheless took them to the hospital for observation.</p>
<p>There would only be a comma if written this way:</p>
<p>The rescuers reached the skiers and found them apparently unharmed, but nevertheless they took them to the hospital etc</p>
<p>^Right, that is true. You would want to refer to the subject (“they”) again if you use a comma. I take back what I said about the sentence’s requiring a comma.</p>