The phrase 'closing the doors properly' is impersonal - it does not indicate who or what is the grammatical subject that performs the action of closing. The original sentence is clear about this - the doors are the passive grammatical subjects: 'the doors are properly closed'. Answer choice E preser...

D is more concise, and therefore stylistically preferable. Furthermore, the phrase 'having salted' ties the action more closely with the agents of the action - the Carthaginians. The phrase 'the salting of' does not ascribe agency (=doing the action) to the Carthaginians. For example, theoretically,...

The two responses do appear very close in meaning. The difference seems to lie in the different wording: ' national corn yield' versus 'corn harvests'. To avert the national problem we need to insure that the national yields increase. D is not sufficiently specific an assumption - it might pertain o...

Time management on the test is a topic that needs to be addressed in its own right to ensure success. At Master GMAT we advise our students to use a time management table as they work on practice tests. After each simulation test you can examine your performance vis-a-vis the table, and see how you ...

B is incorrect, because we are interested in the accumulation in the oceans, and not on the contribution of the different tributaries (rivers) that flow into the ocean. Salt could be differently distributed in different tributaries, but still contribute to the same total increase of salt levels. A i...

For a passage followed by 4 questions, 9 mins. is exactly the recommended time - congratulation! Don't beat yourself up for getting one question wrong - you are in the processing of perfecting your skills. The better attitude is to ask yourself why you got one question wrong, and see if you can gene...

I wouldn't say that the original sentence confuses or contrasts wood with metal. The problem is the ambiguity of the pronoun "it", and the awkward sentence construction. In an earlier configuration, the crosspiece of the frame enclosing the Mona Lisa is made of beech wood, but now ** it **...

Perhaps you need to reassess your understanding of the word "flawed". When something is flawed, this does not mean it is outright wrong or false, but that is has something wrong with it, whether slight or major. For the assumptions to be "problematic" or "not always accurate...