The invention of artificial hearts marked a turning point in the battle heart disease．
A．among B．for C．against D．between
Some people try to knock me down, only me more determined to do better．
A．to make B．makes C．having made D．made
She removed hat she was wearing and tried on _____ black silk one．
A．a; a B．the; the C．the; a D．a; the
Last year, the advertising rate _____ by 20 percent．
A．raised B．aroused C．arose D．rose
We are quite ______ to our parents and our teacher alike．
A．respectable B．respectful C．respective D．respected
We asked both Tonny and Jerry, but could offer any help．
A．either B．all C．none D．neither
