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问题
判断题
AD426/506机器可通过改变激光直径来调整图像浓度。
答案
参考答案：
对
填空题
看图完成句子或短语。
1.
They are _____________.
2.
This is a _____________.
3.
This is _____________.
4.
These are _____________.
5.
These are _____________.
6.
I like _____________.
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解答题
一个木工锯一根长13米的木条，他先把一头损坏部分锯下1米，然后锯了5次，锯成几段一样长的短木条，求每段木条的长度。
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They are _____________.
This is a _____________.
This is _____________.
These are _____________.
These are _____________.
I like _____________.