两个相似三角形的相似比是5∶7，第一个三角形的最大边长50cm，第

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问题填空题

两个相似三角形的相似比是5∶7，第一个三角形的最大边长50cm，第二个三角形的最大边长为（）；如果第二个三角形的周长为35cm，那么第一个三角形的周长是（）。

答案

70cm；25cm

阅读理解

阅读短文，将下面的课程表补充完整.

The new school term is coming. Now the school clerks are planning a new timetable for Class 7, Grade 9.

There are six classes every day, four in the morning and two in the afternoon. The students have a math

class every day. And they have seven English classes in a week. Two of them are given by a foreign teacher

and should be arranged (安排) together on Thursday morning.

There are five Chinese classes in a week. Two of them should also be arranged one after the other for the

students to write their compositions.

They have two physics classes in a week but on different days. Besides these, there is an art class every

Wednesday afternoon.

It's necessary and important for students to take enough exercise. So they have two PE classes every week.

And they can do outdoor activities after school every afternoon.

问答题简答题

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