题目

生物的各种特征是由什么控制的（） A . 基因 B . 环境 C . 其他生物 D . 气候 答案：A13．  Surfing the Internet can help open students'eyes and get more knowledge．As a teacher，I encourage my students to use the Internet．In class those students who surf the Internet understand lessons better than the others．Besides，people can use the Internet to write letters or stories and send e-mails．Many students communicate with their friends online．You can also make friends by chatting on QQ．It is cheaper than calling somebody far away and it's also much quicker．Nearly one third of young people surf the Internet for fun．They like to listen to music，watch films，and go to their favorite stars'websites．But can the Internet cause problems？Some of my students who used to study well at school are now failing exams．Because they spend a lot of time playing computer games．56．Surfing the Internet can help open students'eyes，can't it？Yes，it can．57．What's the writer？A teacher．58．How can you make friends on the Internet？We can make friends by chatting on QQ．59．How many young people surf the Internet for fun？Nearly one third．60．According to the passage，what makes some of the students fail exams？Playing computer games．