题干

在平面直角坐标系xOy中,抛物线y=ax2+bx+2过B(﹣2,6),C(2,2)两点.

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同类题3

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    We all have our favourite teachers—those who treat us equally. But what about those teachers we don't know as well (for even don't like much)?

You can do lots of things to get a relation with your teacher. First,do the following:____ Complete all homework on time.Be attentive,be respectful,and ask questions.____ Obviously,your teachers are really interested in their subjects or they wouldn't have decided to teach them! Show the teacher that you care,even if you're not good at math or fluent in French—send the message that you are a dedicated student.

    You can also schedule a private meeting during a teacher's free period.____ You can ask questions,inquire about a career in the subject,or talk about your progress in class. You may be surprised to learn that your teacher is a bit more relaxed one on one than when lecturing in front of the whole class.

However,here are some things to avoid when trying to establish a relationship with your teacher:

    ⒈____ Teachers sense when your only motivation is to get special treatment,a college reference,or a job suggestion.

    ⒉Trying to be teachers' pet. You just attract the teachers' attention on purpose and your classmates may start to hate you.

    ⒊____ It's OK to offer a small sign of thanks to teachers if they've been helpful to you. But a teacher is usually not allowed to accept the wrong message,and a teacher is usually not allowed to accept anything expensive.

A.Giving expensive gifts.

B.Show up for class on time.

C.Not being sincere.

D.Find the practical value in classes.

E.Use this time to get extra help.

F.Show an interest in the subject.

G.Get along better with your teachers.

同类题5

阅读下面的文言文,完成下列小题。

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(节选自《宋史·贾黄中传》)