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Air transport will be safe because of
Air transport will be safe because of
admin
2014-12-30
74
问题
Air transport will be safe because of
选项
A、new types of aircraft.
B、better training methods.
C、three-dimensional models.
D、improved technology.
答案
D
解析
Paragraph 9: But before long our aircraft and cars will be piloted by computers which are never tired or stressed.
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本试题收录于:
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