用下表三台显微镜（编号为A、B、C）分别观察同一装片的洋葱表皮细胞．请回答下列问题：台号目镜物镜A5×8
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显微镜的放大倍数═物镜放大倍数×目镜放大倍数．在A中：显微镜的放大倍数为5×8═40倍；B中：显微镜的放大倍数为10×10═100倍；C中：显微镜的放大倍数为15×40═600倍．（1）只有放大倍数最小，看到的细胞数目才最多．A组中，显微镜的放大倍数最小，所以观察到的细胞数目最多．
（2）只有放大倍数最大，观察到的单个细胞的面积才会最大．C组中，显微镜的放大倍数最大，所以观察到的单个细胞的面积最大．
（3）在目镜中：目镜越长，放大倍数越小；在物镜中，物镜越短，放大倍数越小．
故答案为：（1）A
（2）C
（3）A
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