【单选题】已知全集U=R,A?U,B?U,如果命题P: 2 ∈A∪B ,则命题非P是( )
【判断题】It’s really good on the first date to do an activity in which you can have an opportunity to talk openly with one another.
【简答题】Ellen: They‘re showing Titanic on Channel 2. Jack: But we’ve already seen it, Ellen. Ellen: Yes, but I‘d like to see it again, Jack. Jack: When does it start? Ellen: It starts at half past eight and f...
【单选题】La página que le dará información de cómo aumentar en los pueblos la actividad cultural es...
A.
www.pueblosquebonitos.com
B.
www.progresorurales.com
【单选题】Clasifica a las empresas en función de dónde ejercen su actividad, esto es, en el sector primario, secundario o terciario.
E.
procedencia del capital
【简答题】It’s often true that jobs for students sometimes lead to employment after graduation, so it’s a good idea to think carefully before you begin working during your college years. During my entire colleg...
【简答题】已知U=R,集合A{x|x<或x>2},则CUA= (A)(-2,2) (B)(-∞,-2)U(2,+∞) (C)[-2,2] (D)(-∞,-2]U[2,+∞)