4. If present metal prices continue to sharply rise, the value of the copper in a penny will soon be greater than the face value of the coin.
(A) If present metal prices continue to sharply rise,<- Wrong ..Cannot insert sharply between infinitives
(B) If present metal prices are continuing their sharp rise, < - incorrect
(C) Should present metal prices continue their sharp rise,<- correct
(D) Continuation of sharply rising metal prices should mean that < --incorrect
(E) Metal prices’ sharp rise continuing should mean that <-- incorrect
6. The cause of Osgood’s syndrome is unknown, nor is it known why the disease appears to be increasing in the United States.
(A) unknown, nor is it known <- Correct
(B) unknown, neither do they know <- incorrect usage of neither
(C) not known, nor do they know < - not known is unnecessary
(D) not known, unknown too is< - not known is unnecessary
(E) not known, neither do they know < - not known is unnecessary
17. Whether modern statistical techniques can be usefully applied to the past, and to a society quite different from our own, is an issue historians and economists are currently debating.
(A) Whether modern statistical techniques can be usefully applied to the past, and to a society quite different from our own, is an issue <- Parallel and singular S-V agreement
(B) If modern statistical techniques can be usefully applied to the past, and to a society quite different from our own, are issues<- Wrong as SV agreement error
(C) That modern statistical techniques can be usefully applied to the past, and to a society quite different from our own, are issues <--Wrong as SV agreement error
(D) Modern statistical techniques being usefully applied to the past, and to a society quite different from our own, is an issue < - use of being makes the sentence passive
(E) The useful application of modern statistical techniques to the past, and to a society quite different from our own, is an issue < changes the meaning of sentence from "Uncertainty" to "Certain fact "
19. At a conference on the origins of language, the complexity of tools 1.75 million years old were said to suggest a level of human development, inconceivable unless they had language.
(C) was said to be suggestive of a level of human development not conceivable without language < Not conceivable is wrong here.. should be inconceivable
(D) was said to suggest a level of human development inconceivable unless they had language <-- They has no referent - pronoun reference error
(E) was said to suggest a level of human development inconceivable without language <- Correct
