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相似三角形的性质是相似形一章的重点，现举例说明它在中考解题中的应用．例1如果两个相似三角形对应边的比为2：3，那么它门的面积比是（）（A）4：9；（B）2：3；（C）／了：八；（D）2：巳（994年北京市中考题）例2两个相似三角形的面积比是1：4，那么它们的相似比是（94年?
The nature of similar triangles is the focus of the chapter on similarity. Now it is an example to illustrate its application in the examination of problems. Example 1 If the ratio of the sides of two similar triangles is 2:3, then the area ratio of its doors is () (A) 4:9; (B) 2:3; (C)/: Eight; (D) 2: 巳 (Beijing exam in 994) Example 2 The area ratio of two similar triangles is 1:4. Then their similarity ratio is (94 years?