题目

根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 Most drinks stating that they are fruit-flavored (水果味道的) contain no fruit at all, while most of the rest contain only a small quantity of fruit, according to a study carried by the British Food Commission. “Shoppers need to check the labels (标签) before buying drinks, though sometimes the actual content can be non-existent,” said Food Commission spokesperson Ian Tokelove. “Food production is highly competitive. It will increase profits, and consu如图所示，△ABC是等边三角形，点D、E分别在BC、AC上，且CE=BD，BE、AD相交于点F．求证：（1）△ABD≌△BCE；（2）△AEF∽△ABE．