486人<500人
答:不能同时接待500位游客
在平面直角坐标系中,把点P(4,5)绕原点旋转90°得到点P1,则点P1的坐标是( )
下列函数中,是奇函数是( )
A
Volunteers Needed
Sunny Children's Hospital
•Two people are needed
•Be good with kids
•Play fun games with kids
•Spend four days a month
•Tel:593 8-6357
Home Love
•Help old people repair things
•Have skills in repairing
•Spend thirty hours a month
•Tel:5742—3625
Blue Water Beach
•Collect(收集)and carry rubbish
•Clean up the beach every Sunday morning
•Tel:7204—4160
SOS Children's Village
•Five English teachers are needed
•Outgoing with a loving heart
•Spend one week a month
•Tel:6368—2745