在直角坐标中,x、y是坐标系中任意点的位置,用x和y表示第一象限或第二象限的Python表达式为()。
A. x>0andy>0orx<0andy<0
B. x>0andy<0orx<0andy>0
C. x>0andy<0orx<0andy<0
D. x>0andy>0orx<0andy>0
Cloze: Choose the suitable statements from the box and complete the passage._____1__________People will not find you attractive even if you put on a nice makeup but dressed sloppily.We are not asking our staffs to be all dressed like a fashion show or going to a ball, but at least not to be mistaken as cleaners or some delivery men.Other times, 2 . At work, your appearance will be a reflection of our staff and the company they are working for.How you dress is not just a respect for others, but more important, a respect for yourself. If you like people to respect you and your clients have confidence in your work, before you can demonstrate with your performance, 3 .We are not going to emphasize more on the importance of how you should dress, but as long as you are coming to work or meeting with a client, you represent our company,4______!Please refer to the dress code and samples provided to you before, dress yourself properly, respect yourself and avoid the embarrassment of being confronted directly by the management on this issue.Person coming to work in an inappropriate attire will be sent home to change at your own expense and will have to work overtime (without compensation) for making up for the time loss. 5 , first time offenders will be given verbal warnings, subsequent offence will lead to more severe action from the management.On "Casual Friday", only jeans, T-shirts, polo shirts, sport shoes are allowed but NO shorts of any length, hot-pants/skirts, bra-tops, slippers, or any overexposure wear.