问题补充:
单选题______knowntous,_______increasingnumberofstudentsareburiedintheirstudies.A.What is;aB.It is;theC.As it is;theD.As is;an
答案:
D解析本题考查定语从句和冠词。“,”前后都是句子,可判断第一个空应用连词,排除B项; a number of +复数名词+复数谓语动词;而the number of +复数名词+单数谓语动词;再结合are及increasing可知第二个空应填an。句意:众所周知,专心学习的孩子越来越多。