题目内容

NO

A. Educate the public to protect children from online abuse.
B. Take action to safeguard children’s personal information.
C. Train teachers to help children master computer skills.
D. Invest in research to decrease the cost of computers.

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About 16 million.
B. About 25 million.
C. About 36 million.
D. About 45 million.

A. Jobs in transportation.
B. Jobs in production.
C. Jobs in engineering.
D. Jobs in administration.

A. Wisconsin.
B. Pennsylvania.
C. Massachusetts.
D. Kentucky.

About three days.
B. About seven days.
C. About ten days.
D. About fifteen days.