下列事例能证明地球是个球体的是( )
①麦哲伦环球航行 ②地球卫星照片 ③海边观船④月食 ⑤站得高看得远 ⑥日月星辰的东升西落.
A:①②③④⑤⑥
B:①②③④⑥
C:①②③⑤⑥
D:①②③⑤
如图,在长方体ABCD﹣A1B1C1D1中,AA1=2AB,AB=BC,则下列结论中正确的是( )
回答下列问题:
I decided____ (buy) it and it was ____ (cheap) than the science book.