[B] The project proceeded smoothly at first but lately unexpected problems continually made their appearance.
[C] At first the operation of the project went on smoothly, but lately something went wrong with its operation.
[D] At first the project was thought to be satisfactory, but recently people found that there were actually lots of problems with the project.
45. The search for ways of preserving foods is not new. Primitive man learned that he could make foods last by drying them. The greatest single advance began in 1800 when a Frenchman, Nicolas Appert, discovered that he could preserve certain foods by sealing them in jars and keeping the air from them. The process was the start of the vast canning industry which brings us many foods in all seasons.
[A] Nicolas Apperts most important contribution to canning industry is his discovery that air causes food to spoil.
[B] Nicolas Appert was the first person to preserve foods in jars.
[C] Nicolas Appert learned from the primitive men the method of preserving food.
[D] To preserve foods Nicolas Appert put them into sealed jars to let them dry up.
答案解析
Section III: Reading Comprehension (10 points)
41.[A]
42.[B]
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