Who should do the homework ?
Even in the age whrn most women (0) go out to work, many of them full-time, they still find themselves doing most (1) the chores. Research shows that mothers spend, on average, three hours a dey (2) housework and cooking, whereas fathers spend just 45 minutes. Men still expect women to do that housework. (3) men do things around the house, they act as though they are doing their partner a favor. They say things like:'' I' ve done the washing-up (4) you'',instead of regardinh it as something (5) benefits both of them.
Housework is (6) important that couples should discuss (7) along with all the other big issues when they are first deciding whether to marry or (8) Men give all sorts of excuses for not doing housework:'' I work long hours and I don't think my wife's work is as stressful as (9) or:'' I would do more but she ' s so much better (10) it than me ''. But what a man really means by this (11) that he feels his job is ultimately (12) important than his partner's.
1. Cho các tập hợp
A = { x ϵ R, -3 < x < 6 } , B = [ -1;2) \(\cup\) [5;8] , C = { x ϵ Z, (x - 1)(3x2 - 10x + 3) = 0 }.
1. Viết tập hợp A bằng kí hiệu nửa khoảng và tập hợp C bằng cách liệt kê các phần tử của nó.
2. Tìm B \(\cap\) C, A \ B, CR( A \(\cup\) B).
3. Cho D = [ m - 1;m + 7 ] (m là tham số). Tìm m để A \(\cap\) D \(\ne\) \(\varnothing\).