题目内容：

There were times when it was only schoolchildren who felt sick before they got their grades．But now teachers in Germany are scared, too, as they are being graded by their students.

Many teachers are opposed to it．They don’t mind being evaluated．But they are upset because the results are then being posted on the Internet and accessible to millions of Internet users．On the website www. spickmich.de during the past four months students have posted evaluations of 100,000 teachers.

The teachers are graded on categories such as “motivated”, “good instruction,” “easy examinations”, or even “sexy.” Many teachers think that their privacy has been violated.

The creators of the website say that the students are only being offered the chance to provide teachers with some feedback about their classroom instruction．Bernd Dicks, who founded the website with three friends, says that the students are largely quite satisfied with their teachers．On a grading scale of one to six, the teachers’ average grade is 2.7 and it has been improving lately．He often says the impression is that students are bullying（欺负） their teachers．But there is also bullying of the students by teachers.  

“Teachers must also learn to live with criticism,” he added．But still, the website is not totally immune from manipulation（操纵）, as one teacher near the northern city of Hanover recently proved．He registered himself on the website as a student and then rated his own teaching colleagues highly．Within a few days, seven of his colleagues were listed in the top 10 rankings of Germany’s best teachers.

45. Many teachers are opposed to the website because        .

A．their privacy has been violated         B．they are afraid of being assessed

C．their evaluations are unfair       D．the results are not satisfying

46．The founders of the website intended to         .

A．get the students to know their teachers better

B．conduct a survey on teachers’ performances

C．help the teachers to improve their teaching

D．change the teachers’ ways of giving instructions

47．From what the teacher in Hanover did, we can infer         .

A．he intended to help his colleagues

B．there was some disadvantage of the website

C．his colleagues were more popular than him

D．he wanted to know how he was evaluated

48．Which of the following can be the best title of the passage?

A．Teachers get graded by pupils  B．Teachers are angry with website

C．Teachers need self-assessment        D．New invention in assessing teachers