题目

22  The sight, hearing and other senses of wild animals are much better than_______of a human. A  that                        B  those                      C  which                            D  what 答案：D13．已知：如图，△ABC中，∠CAB=90°，AC=AB，点D、E是BC上的两点，且∠DAE=45°，△ADC与△ADF关于直线AD对称．求证：（1）∠FAE=∠BAE；（2）CD2+BE2=DE2．