两电荷量分别为q1和q2的点电荷放在x轴上的A、B两点,两电荷连线上各点电势随x变化的关系图线如图所示,其中P点电势最低,且AP>BP,则( )A.P点的电场强度大小为零B.q1的电荷量大于q2的电荷量C.q1和q2是同种电荷,但不一定是正电荷D.负电荷从P点左侧移到P点右侧,电势能先减小后增大
I asked ____to do_____schoolwork by _____.( )
A.him; his; himselfB.her; her; itself
C.her; his; myselfD.him; her; herself
Which of the following is the correct pronunciation for the word"interesting"?( )
A./in'tristiŋ/B./in'tristin/
C./'intrəstin/D./'intrəstiŋ/
Which word doesn't have the same stress (重音) as the others?( )
A.discoverB.habitC.guitarD.suppose
Which sound goes with the word"search"?( )
A./sətʃ/B./sə:tʃ/C./ðətʃ/D./ðə:tʃ/
They met in 2001and got married_____ two years later.( )
A.specialB.exactC.hardlyD.exactly