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【单选题】
卢瑟福实验中为什么用金箔?A.
看起来上档次
B.
金的延展性最好，容易形成很薄的片
C.
随便用的
D.
粒子撞击温度太高，金箔不以融化
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举一反三
【单选题】News Report Three: Questions 5 to 7 are based on the news report you have just heard.
A.
Spend more time together.
B.
Tell them adventure stories.
C.
Do something fun and creative.
D.
Play with them in a safe place.
【简答题】直流力矩电动机的结构和性能各有什么特点？
【简答题】直流力矩电动机的结构有何特点？
【单选题】News Report Three 5. How long does the program last?
A.
One year.
B.
Two years.
C.
Three years.
D.
Four years.
【单选题】News Report Three (5-7)
A.
Raise the salary of the STEM jobs.
B.
Force students to learn STEM.
C.
Pay little attention to STEM.
D.
Invest more money in the education of STEM.
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