【简答题】[l] Scientists guess that 80% of a person's weight gain comes from genetics and 20% comes from the person's environment. By 1998, more than 130 genes and gene neighbors were found to have some link to...
【简答题】Work in groups to write a farewell speech based on the situation given below. l You are saying goodbye to Mr. Bell, who is leaving your company. l Introduction: on behalf of the company, say a few wor...