学校准备购买电脑,1万元能买2台,现有经费20万元,能够买这样的电脑多少台?
20÷1×2,
=20×2,
=40(台);
答:能够买这样的电脑40台.
文中共有10处语言错误,每句中最多有两处。每处错误只涉及到一个单词的增加、删除或修改。增加:在缺词处加一个漏字符号(∧),并且在其下面写出该加的词。删除:把多余的词用(﹨)划掉。修改:在错词下面划一横线,并在该词下面写出修改后的词。
注意:1.每处错误及其修改后仅限一词;
2只允许修改10处,多者从第十一处起不记分。
During the summer holidays this year, I thought I should do anything meaningful instead of staying at home, so I was got a job at a KFC fast food restaurant, worked there as a cleaner, I worked seven hours a day for three weeks.
The job was hard and bored and seemed endless, which made me so tired that I nearly gave it in half way, but I stuck to it with determinations. Every day I started off for work early in the morning and got home lately in the evening. Finally I finished the job before the new term begins.
Now, I understand that labor means. I think it is really successful experience.
生命起源和生命进化问题吸引了许多科学家探究的目光。下列关于生命起源和生命进化的有关说法中,正确的是
A.生命起源的化学进化过程已经完全被实验证实
B.人工选择比自然选择在生物进化中的作用更大
C.进化总趋势为简单到复杂、低等到高等、水生到陆生
D.胚胎学和解剖学的研究为生物进化提供了直接证据