70．The author supports the idea that

　　.

　　A．on – the – job training is less costly in the long run

　　B．formal schooling is less important than job training

　　C．specialists are more expensive to hire than generalists

　　D．generalists will do better than specialists in management

　　第二节（共5小题；每小题2分，共10分）

　　根据短文内容，从短文后的选项中选出能填入空白的最佳选项。选项中有两项为多余选

　　项。

　　Brain Transplants

　　Research on the human brain has been attracting more and more scientists in recent years.

　　71

　　If we compare a human brain to a hard disc, what the scientists are doing is to make better use of the hard disc.

　　The idea that a human brain could be transplanted (移植) may come from Frankenstein. In 1999, an experiment turned a bear into a dolphin (海豚).

　　72

　　They were made of the memory area in the dolphin’s brain containing information about swimming. They had a series of useful information, which was saved into a button – sized chip (芯片). Later the information was transplanted into the action memory area in the bear’s brain.

　　73

　　It proved to be a highly successful experiment and a bear was turned into a dolphin.

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