Puys, kindly post your answers with explanation too.
1. Vivien Thomas, who had no formal medical training, in struggling against overwhelming odds, he became a cardiac surgeon and eventually to receive an honorary doctorate from Johns Hopkins University.
A) who had no formal medical training, in struggling against overwhelming odds, he became
B) having had no formal medical training, in struggling against overwhelming odds to become
C) who, having no formal medical training, he struggled against overwhelming odds in becoming
D) who, having had no formal medical training and struggled against overwhelming odds, became
E) who had no formal medical training, struggled against overwhelming odds to become
IMO E .
A). prepositional phrase beginning with "in struggling" in second clause is modifying "medical training" instead of subject "Vivien Thomas" making the whole sentence awkward. Hence rejected.
B). Usage of participle "having" is wrong to modify subject also the prepositional phrase in second clause causing the same problem as in A. Hence rejected.
C). Tense problem, unparallel.
D). Tense problem, unparallel.
E). relative pronoun "who" clearly modify the subject "Vivien Thomas. verb "struggled" is appropriately parallel with verb "had" making the sentence happened in past tense, infinitives "to become" is clearly parallel to infinitive "to receive". Hence correct
2. The yield of natural gas from Norway's Troil gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years' production.
A) 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for
B) 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least
C) 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing
D) 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least
E) 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least
IMO B
A). It's not clear what relative pronoun "which" is modifying whole phrase preceding it or "six billion cubic feet a day". Overall ambiguous and hence rejected.
B). "an extraction rate" is clearly defining the rate mentioned in the first clause and overall the sentence conveys a clear meaning.
C). become awkward in the last part of the sentence.
D)participle "allowing " is modifying "The yield of natural gas" which changes the meaning of the sentence.
E). same as A
3 In archaeology, there must be a balance between explanation of the value and workings of archaeology, revealing the mysteries of past and present cultures, and to promote respect for archaeological sites.
A) between explanation of the value and workings of archaeology, revealing the mysteries of past and present cultures, and to promote
B) among explaining the value and workings of archaeology, revealing the mysteries of past and present cultures, and promoting
C) between explaining the value and workings of archaeology, revealing the mysteries of past and present cultures, and when promoting
D) among explaining the value and workings of archaeology, the revelation of the mysteries of past and present cultures, and to promote
E) between explaining archaeology's value and workings, in the revealing the mysteries of past and present cultures, and in promoting
IMO B, this is a question of parallelism and comparison. Between is used when we have to show comparison between two things and Among to show comparison in more than two things.
In B, "among" clearly shows comparison in more than three things and the verbs promoting, revealing and promoting are parallel to each other.
4. According to a 1996 survey by the National Association of College an University Business Officers, more than three times as many independent institutions of higher education charge tuition and fees of under $8,000 a year than those that charge over $16,000.
A) than those that charge
B) than are charging
C) than to charge
D) as charge
E) as those charging
IMO E
Usage of the idiom "as many........as".
5. Nobody knows exactly how many languages there are in the world, partly because of the difficulty (of? ) distinguishing between a language and the sub-languages or dialects within it, but those who have tried to count typically have found about five thousand.
A) and the sub-languages or dialects within it, but those who have tried to count typically have found
B) and the sub-languages or dialects within them, with those who have tried counting typically finding
C) and the sub-languages or dialects within it, but those who have tried counting it typically find
D) or the sub-languages or dialects within them, but those who tried to count them typically found
E) or the sub-languages or dialects within them, with those who have tried to count typically find.
IMO A,
pronoun "it" is clearly defining singular language, which contains sub language and dialect in it. present prefect tense is appropriately used - "have tried" and "have found".