A:鞋底的花纹
B:浴室脚垫做得凹凸不平
C:在合页轴上加润滑油
D:矿泉水瓶盖上的条纹
She hopes to ____ a healthy and lovely boy.
如图所示为河外星系、太阳系、地月系三者的关系(图中圆的大小代表天体系统层次的高低),其中正确的是( )
The shopkeeper did not want to sell for he thought was not enough.