题目

根据汉语提示写出英文短语 1.She can ________(下国际象棋). 2. I _________(起床) at 6:00 in the morning. 3.My mother _________(骑自行车) to work every day . 4.I must _______(清洗餐具) after dinner. 5.Elephants can never_______(迷路) . 答案：1.play chess  2.get up  3.rides a bike  4. do the dishes  5.get lost焊接金属时，能用作保护气的一组气体是 A.H2、N2     B. N2、 O2       C.CO2、CO      D. N2、Ar