题目

如图，△ABC中，D在BC上，F是AD的中点，连CF并延长交AB于E，已知，则等于_____． 答案：【答案】．【解析】作DG∥CE，如图，利用平行线分线段成比例定理，由DG∥CE得到 ，设BG=2x，则GE=3x，由EF∥DG得到=1，所以AE=EG=3x，从而得到 的值．解：如图，作DG∥CE， ∵DG∥CE，∴，设BG=2x，则GE=3x，∵EF∥DG，F是AD的中点，∴=1，∴AE=EG=3x，∴ 。故答案为：．24、从方框中选出适当句子补全对话。     Nancy：Do you have any time this afternoon? Carol：1                                                                                                                            Nancy：Let's go to the zoo and see the dolphins show． Carol：Dolphins show? 2                                                                                                        Nancy：Because they're very lovely and cute． Carol：I like them，too．3                                                                                                        Nancy：We can get there by bus or by bike． Carol：OK．Let's get there by bike．4．                                                                                                          Nancy：What about two o'clock this afternoon? Carol： 5                                                                                                            Nancy：Let's meet outside the zoo gate．OK? Carol： All right．See you then． 评卷人 得分 四、阅读理解 （每空？ 分，共？ 分）