题目内容

This paper is ____ how bilinguals separate the two languages while talking.

A. a preliminary attempt
B. an overview of
C. a report on
D. a review of

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By simultaneously recording the electrograms using the same electrodes, we were able to determine the relationship between the two entities.( )

By simultaneously recording the electrograms using the same electrodes, we were able to ____ the relationship between the two entities.

A. cause
B. determine
C. result from

Several factors tend to prevent investigators from seeing the true nature of the problem.( )

下列关于调Q基本理论的说法，哪项是不正确的( )。

A. 初始反转粒子数密度越高，激光脉冲能量越高
B. 初始反转粒子数密度越高，激光脉冲宽度越窄
C. 初始反转粒子数密度越高，激光脉冲峰值功率越高
D. 初始反转粒子数密度越高，能量利用率越低