如图是我国玉米主产区分布示意图.读图回答下列各题.
如图所示,人的前臂可视为杠杆,肘关节为支点,哑铃对手的压力为阻力.当曲肘向上举起哑铃时,下列说法中正确的是 ( )
看图,配对,将句子编号写在相应的横线上。
A. The pears are juicy and sweet. Here you are.
B. - How is the juice? - It's very sweet.
C. Smell the soup. It's very nice.
D. - How is the rice, Peter? - It's yummy.
① ____
② ____
③ ____
④ ____
司机王叔叔从厦门出发到福州送货,速度是60千米/时,行驶了5小时。王叔叔一共行驶多少千米?
用一个平面去截一个正方体,截面不可能是( )