小升初英语类数学题专项练习（一）
1、An ant（蚂蚁） covers a distance of 90 metres in 3 hours. The average speed of the ant in decimetres（分米） per minute is____.
2、
3、In a certain town some people were affected by a ’flu’ epidemic（流感）. In the first month 20% of the population contracted the flu whilst 80% were healthy.
In the following month 20% of the sick people recovered and 20% of the healthy people contracted the disease.
What fraction（分数） of the population is healthy at the end of the second month?
4、Mpho, Barry, Sipho, Erica and Fatima are sitting on a park bench（公园长椅）. Mpho is not sitting on the far right. Barry is not sitting on the far left. Sipho is not sitting at either end（两头）. Erica is sitting to the right of Barry, but not necessarily next to him. Fatima is not sitting next to Sipho.
Sipho is not sitting next to Barry.
Who is sitting at the far right?
第 一 页 共 11 页
www.99jianzhu.com/包含内容：建筑图纸、PDF/word/ppt 流程，表格，案例，最新,免费下载,施工方案、工程书籍、建筑论文、合同表格、标准规范、CAD图纸等内容。