用长L=0.6m的绳系着装有m=0.5kg水的小桶,在竖直平面内做圆周运动,成为“水流星”.(g=10m/s2)求:
下列生理现象不需要其他部位供应生长素的是( )
—How was your school trip to the city art center?
—Fantastic! We _______ to a museum and a gallery.