【单选题】In every cultivated language there are two great classes of words, which makes up the whole vocabulary. First, there are those words 【B1】 which we become familiar in daily conversation, which we 【B2】,...
【简答题】It was a cold winter afternoon. Robert stopped for a moment as he crossed the bridge and looked down at the river below. There were hardly any 36 on the river. Near the bridge, however, almost direct ...