单选题
The brain drain of experts away from developing countries will greatly influence these countries' development of ______ industry.
A.complicated
B.sophisticated
C.primitive
D.collective
A
B
C
D
【正确答案】
B
【答案解析】
[解析] 各项的意思是:complicated“复杂的;难懂的”;sophisticated“精密的,尖端的;老练的,老于世故的”;primitive“原始的,粗糙的”;collective“集体的,共同的”。根据句意判断,答案为B。
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