TPO 19 [Task 1] 题目+高分示范

<p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal"><b>添加关注，回复相应信息，获取免费备考视频课程</b><br></p><p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica, Arial, sans-serif;hyphens:auto;text-align:justify;" data-flag="normal"><img data-key="0" src="http://imagev2.xmcdn.com/storages/e72b-audiofreehighqps/1C/90/GKwRIDoFoDviAAJLygEHrRYJ.jpg!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" alt="" data-origin="http://imagev2.xmcdn.com/storages/e72b-audiofreehighqps/1C/90/GKwRIDoFoDviAAJLygEHrRYJ.jpg?op_type=0" data-large="http://imagev2.xmcdn.com/storages/e72b-audiofreehighqps/1C/90/GKwRIDoFoDviAAJLygEHrRYJ.jpg!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" data-large-width="750" data-large-height="318.80509304603333" data-preview="http://imagev2.xmcdn.com/storages/e72b-audiofreehigh...