That year the Chinese people were always in high spirits,for pieces of exciting news came to China______ ep by step B.one by one C,little by littleD.one after another(为什么答案是Ｄ啊，几个词意思好象都一样的，为什么啊）
热心网友
step by step 是一步步B.one by one一个一个的 C,little by little逐步，一点一点D.one after another一个接一个的 所以是D孩子，好好学英语吧……
热心网友
B、D从语法角度都没错。但D更贴切些。 one by one 有一个挨着一个的意思，比如排队。
热心网友
本人认为b、d两个答案均可。one by oneadv.一个接一个；one after anotheradv.接连地
热心网友
step by step 逐步地one by one一个接一个little by little渐渐one after another接连地根据前文，应该选速度最快的one after another
热心网友
看好，消息是一条接一条的来到。而step by step 是逐步地one by one 是一个挨一个little by little是渐渐所以……