(单选题) The advice given in the first sentence of Para.3 is to __________.()(本题2.0分)
A、 find out what jobs are available and the opportunities for future promotion
B、 examine the careers available and how these will be affected in the future
C、 100k at the information on, and probable future location of, various careers
D、 study the opportunities and the kinds of training that will be available

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