According to the author, biographies can become boring because they are too
A. short.
B. detailed.
C. authoritative.
D. superficial.
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下列不厲于CT防护中常用的辐射剂量的是()
A. 局部剂量
B. 个人剂量
C. 全身别量
D. 有效剂量
E. 照射量
Pro-social games enable participants to
A. skillfully accomplish the required tasks.
B. select medium puzzles for their partner.
C. be integrated into different social groups.
D. conduct helping actions to their partner.
If it had not been watched by the government, GM would probably have
A. imposed no pressure on bondholders to take the 10% equity stake.
B. cut the percentage of equity stake controlled by the UAW.
C. torn up its UAW collective bargaining agreement in an illegal way.
D. launched staff-downsizing and reduced workers" wages and benefits.
Which of the following is true according to the first paragraph？
A. Video games are usually considered harmful to one"s mind.
B. Video games involving shooting will lead to violent behaviors.
C. People"s views toward video games have always been controversial.
D. Video games will influence the youth throughout their lives.
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