A:杆秤不同,弹簧测力计相同
B:杆秤和弹簧测力计都相同
C:杆秤相同,弹簧测力计不同
D:杆秤和弹簧测力计都不同
向量a→,b→的夹角为60°,且a→=1,b→=2,则2a→-b→等于()
— Many people think Wei Fang ______ her mother.
— Me, too.