题目

Dear Xiao Hua, I am sorry to learn that you have the bad habit of smoking. Though    1．_____ we’ve been friends, I think that is my duty to call your attention   2．_____ to such a bad habit,  that may be harmful to your health and   3．_____ which you may spend much of your money. Yesterday a doctor  4．_____ gave us a lecture on the dangers of smoking. He said, “Tobacco has   5．_____ the element of nicotine which is great harm to human body. 6．_____ It causes coughing, bronchitis, pneumonia and any other diseases.”   7．_____ Dear�如下图，在数轴上的位置如图所示，则         ．