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【单选题】
Which of the following is not a good way to introduce the topic of your presentation?A.
I want to begin with a story that…
B.
Introduce a startling or interesting fact about the topic to make people think.
C.
Ask the audience questions, then wait for someone to answer before you move forward with your speech.
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【简答题】What is a top priority for disease control and prion?
【简答题】FLASH生成的文件类型中，我们常说源文件是指什么扩展名的文件？.swf文件和.fla文件的区别。
【简答题】What are the materials for oil pollution prion?
【简答题】光学显微镜的组成主要分为( )和 ( )、和( )三大部分,光学显微镜的分辨率由( )、 ( )和 ( )三个因素决定。
【单选题】What is the effective prion against injuries?
A.
Leave the wells and swimming pools open as usual.
B.
People who are drunk are forbidden to drive a car.
C.
Send a guard near the window if living in an apartment,
D.
Resist children to pack drugs, stove fuel and poisons.
【简答题】光学显微镜的组成主要分为（）、（）和机械和支架系统三大部分，光学显微镜的分辨率由光源的波长、（）和（）三个因素决定。
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