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成员函数getline函数作用是读入一行字符。()

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A cost-effective solution to the problem of airport congestion is to provide high-speed ground transportation between major cities lying 200 to 500 miles apart. The successful implementation of this plan would cost far less than expanding existing airports and would also reduce the number of airplanes clogging both airports and airways. Which of the following, if true, could proponents of the plan above most appropriately cite as a piece of evidence for the soundness of their plan？

An effective high-speed ground-transportation system would require major repairs to many highways and mass-transit improvements.
B. One-half of all departing flights in the nation"s busiest airport head for a destination in a major city 225 miles away.
C. The majority of travelers departing from rural airports are flying to destinations in cities over 600 miles away.
D. Many new airports are being built in areas that are presently served by high-speed ground-transportation systems.
E. A large proportion of air travelers are vacationers who are taking long-distance flights.

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成员函数getline函数作用是读入一行字符。()

C++支持两种类型的多态性是编译时多态和运行时多态。()

要通过摄影加强学生的美育教育，学校必须开设摄影必修或选修课。()参考答案：错误

选购二手胶片机时要注意取景窗是否干净，因为它会影响成像效果。()参考答案：错误

要通过摄影加强学生的美育教育，学校必须开设摄影必修或选修课。()
参考答案：错误

选购二手胶片机时要注意取景窗是否干净，因为它会影响成像效果。()
参考答案：错误