A. save the cost of the airframe B. improve some aircraft components
C. save the cost of labour D. develop new technology
4. According to the author, a wise established manufacturer should ______.
A. try to benefit from both financial and technical resources
B. break up his partnership with the East once profits are made
C:keep a tight told over hi-tech development and marketing of airliners
D. collaborate with Asian partners for a short time
5. The word base in the last paragraph represents_______.
A. a production place
B. the initial operation of building aircraft
C. a research institute
D. a position where to start building
答案:CDADA
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