单选题
I can"t believe this new database gives us access to ______ two thousand different resource materials.
【正确答案】
D
【答案解析】选项A错误，“than”需要前面加“more”或者“less”才能正确。选项B和C都需要在后加“than”才能正确。选项D正确，“over two thousand materials”意思是“more than two thousand materials”(两千多种材料)。