形近字字组词。
竭____ 遨____ 赐____ 慨____
渴____ 傲____ 惕____ 概____
协____ 赌____ 资____ 卷____
胁____ 睹____ 姿____ 眷____
序号
1
2
3
4
…
表示点子数的算式
1+4
点子的总个数
观察表中数据,如果用A表示第n个图形中点子的个数,A和n之间的关系可以表示成:
A=____.
完形填空 Dodtors tell us that we should have a 1 from work for a week or two weeksevery year. If it is possible, they say, we should2 our homes and go to another3 of the country. We should go away for4 Then, after the holidays, we will be5and get ready for6 again. But some people do not want to leave their homes and 7 in other places. They think their 8 are best of all. And some people can have a rest in 9way. They can go to visit their friends. They can have a 10holiday together.
如图所示,所使用杠杆属于费力杠杆的是( )