Another question about the following one:.Lincoln, discovering in young manhood the secret that the Yankee peddler has learned before him, knew how to use a good story to generate good will (A) Lincoln, discovering in young manhood the secret that the Yankee peddler has learned before him, knew (B) Discovering in young manhood the secret that the Yankee peddler has learned before him, Lincoln knew (C) Lincoln, discovering the secret that the Yankee peddler had learned in young manhood before him, knew (D) In young manhood Lincoln discovered the secret that the Yankee peddler had learned before him; (E) Lincoln, discovered in young manhood the secret that the Yankee peddler had learned before him, knew 答案:B I don't think the tense of B is OK. Why not E?
9, i would challenge the so-called answer as well:1), i don't like 'results' 2), i need a subject after semicolon. Joice, can u elabrate a little bit more, pls?
11, i go with D. i think is more like a CR answer than a SC: a lot of patients died on the operating table due to great pain, and the situation could n't be changed until anesthesia was invented, so it's essential to the success of operations. in the same token, propeller is essential to powered fight, undoubtedly.