题目

Hi, Jim, there is an interesting picture conveying a message vividly that a difference   16    reality and dream may as well be recognized in our life. Evidently, realizing this difference and trying to shorten this gap is the key to   17    (achieve)our accomplishment,     18     nothing will be gotten in the end. In our daily life, some people are aware of their ability, making great efforts to improve themselves,   19    others ignore the disparity between their earnest wish and poorest actuality, doing nothing but complaining. Conceivably, the confused man i3．请完成下列的相似测试．如图，在△ABC中，AB=AC=4，D是AB上一点，且BD=1，连接CD，然后作∠CDE=∠B，交平行于BC且过点A的直线于点E，DE交AC于点F，连接CE．（1）求证：△AFD∽△EFC；（2）试求AE•BC的值．