—I don't like to use QQ to communicate with my classmates. What about you, Maria?
—I don't, _______.
A:too
B:also
C:either
D:well
已知α∈(π2,π),sinα=35,则tan(α+π4)等于( )
如图所示,悬挂的直杆AB长L=20m,在距其下端h=5m处,有一长为L'=20m的无底圆筒CD,若将悬线剪断,则: