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- 1. Multiple Choice
所有简单的机器都有助于使工作_________。
All simple machines help make work _________.
艰难 harder
容易 easier
- 2. Multiple Choice
哪个是滑轮的例子？
Which of the following is an example of a pully?
- 3. Multiple Choice
哪个是杠杆的例子？
Which of the following is an example of a lever?
- 4. Multiple Choice
哪个是螺旋的例子？
Which of the following is an example of a screw?
- 5. Multiple Choice
哪个是尖劈的例子？
Which of the following is an example of a wedge?
- 6. Multiple Choice
哪个是轮轴的例子？
Which of the following is an example of a wheel and axle?
- 7. Multiple Choice
哪个是斜面的例子？
Which of the following is an example of a inclined plane?
- 8. Multiple Choice
以下哪个可以使我们的工作更轻松？
Which of the following can make our work easier?
- 9. Multiple Choice
以下哪个可以使我们的工作更轻松？
Which of the following can make our work easier?
- 10. Multiple Choice
以下哪个可以使我们的工作更轻松？
Which of the following can make our work easier?
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