下列命题:①对顶角相等;②等腰梯形同一底边上的两底角相等;③菱形的对角线相等;④

题型:填空题

问题:

下列命题:①对顶角相等;②等腰梯形同一底边上的两底角相等;③菱形的对角线相等;④两直线平行,同位角相等.其中逆命题为假命题的有______(填序号)

考点:平行线的性质,平行线的公理相交线菱形,菱形的性质,菱形的判定梯形,梯形的中位线命题,定理
题型:填空题

阅读理解。

      Li Hai is from a family of three people. They like to eat different kinds of food. Li Hai likes hamburgers

very much. He likes to have them for every meal. But he doesn't like vegetables at all. Li Hai's father is

from Guangdong. He likes rice very much. But he doesn't like meat at all. Li Hai's mother is from Dalian.

She likes fish and vegetables very much, but she doesn't like rice or hamurgers. They all like fruit.

根据短文内回答问题。

1. How many people are there in Li Hai's family?

_________________________________

2. Does Li Hai like hamburgers?

_________________________________

3. What does his father like?

_________________________________

4. What doesn't his mother like?

_________________________________

5.Do they like fruit?

_________________________________

题型:填空题

仿照下面的示例写一组句子,要求所写句子使用比喻、拟人的修辞手法。(6分)

月亮嘲笑流星:为了一时的辉煌,不惜献出自己的生命。

流星无怨无悔:你纵然高雅静谧,可总是借助别人的光芒来点亮自己。

题型:填空题

在图书数据库中查扰书名包含“数据库”的所有书的最高价、最低价和平均价。其对应的查询语句如下:  SELECT MAX(单价)AS最高价,MIN(单价)AS最低价,AVG(单价)AS平均价;  FROM图书;  WHERE书名【 】。

题型:填空题

下列植物中,不应当出现在《岁寒三友图》中的是()

A、菊;

B、梅;

C、竹。

题型:填空题

给水泵密封水滤网的作用是什么?

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