A:执拗 桅竿雕梁画栋 惴惴不安
B:寒暄渣滓波涛汹涌慢不经心
C:仓皇诡秘鼎力相助沸反盈天
D:陪罪厮混姣花照水孽根祸胎
It will be 20 years since Hong Kong returned to China on July 1,1997.(就划线部分提问)
____ ____years will it be since Hong Kong returned to China on July 1, 1997?
①719+203
②291﹣87
★③495+217
验算
④84×3
⑤205×8
⑥340×5