38. The speaker can help the audience remember the message longer by___________
A)displaying text-based slides
B)avoiding long technical terms
C) focusing on the width of coverage
D) using simple and powerful diagrams
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39. The underlined word “transfer” in this passage most probably means“_________”
A)create
B) pass on
C) take off
D)describe
40. This passage is mainly about_____________
A) how to make an effective business presentation
B) how to present strong ideas in a presentation
C)how to focus on the depth of coverage
D) how to prepare a powerful diagram
某一元素的原子序数是29，问：（1）该元素原子的电子总数是多少？（2）它的电子排布式是怎样的？（3）它属第几周期？第几族（注明主族或副族）？哪个区？
以下属于健康体适能不属于竞技体适能的是( )
A. 身体灵敏性
B. 身体爆发力
C. 身体平衡性
D. 身体柔韧性
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