1．(2020·全国卷Ⅲ)Some people live with their elderly parents; many more adult children are returning to the family home，if they ever left.adj.成人的；成熟的
2．(2020·全国卷Ⅱ)The ecosystem down there can't handle this nonnative species(物种)．It's destroying the environment.vt.承受；接受
3．(2019·全国卷Ⅱ)“You can use me as a last resort(选择)，and if nobody else volunteers，then I will do it.” adj.最不适当的；最不可能的
4．(2019·浙江卷)They became the hottest thing on the pop music scene in England.n.界；活动领域
5．(2017·江苏卷)If current trends don't bend，Russia's population will be about the size of Yemen's by the year 2050.v.呈弯形；呈曲线
