_山东成考网

22从毎小题的四个选择项中选出最佳选项。

• A、now

• B、still

• C、again

• D、then

What does the text mainly discuss about the Internet?

• A、Its influence on school teachers.

• B、Its effect on high school students.

• C、Its success in high school teaching.

• D、Its achievements in school research.

51.________.