各种问题一串串.父老乡亲,回答算积善,答错请再接再厉,答对送红包.1.一项工程,甲乙两队合作要15天完成,由甲队单独做要20天完成,由乙队单独做要多少天完成?2.河西农场的一块菜地,今年收西

Question

各种问题一串串.父老乡亲,回答算积善,答错请再接再厉,答对送红包.
1.一项工程,甲乙两队合作要15天完成,由甲队单独做要20天完成,由乙队单独做要多少天完成?
2.河西农场的一块菜地,今年收西红柿224吨,比去年增产一成二.去年收西红柿多少吨?
3.（ ）减少四分之一是90.
4.(1)H____!Nice to meet you.
(2)My g____ is 65 years old ,but he still works in a middle shool.
(3)The sister of my a____.
(4)Simon is a good boy.he is __________(乐于助人的).
(5)My parents are both English t____ in No.2 middle school.

Answer 1

1.60
2.268.8
3.120
4.
i
grandfather
aunt
accommodating （helpful）
teachers