The young man____ to prison because he tricked people into buying his goods.
近年来,长江洪灾频繁发生,其主要自然原因是 ( )①中游地区围湖造田②中、下游地势低平③流域内降水丰富④上、中游砍伐森林破坏了植被⑤支流众多,雨季涨水集中
如果口算35×19,可以先口算35×20=____,然后再减去____个35,得____。