Electrolysis(电解)is the process ______ electric current is passed through a substance to cause a chemical charge.
| A．which | B．whose | C．to which | D．by which |
He gave up smoking to_________ the money for his son’s education.
| A．set out | B．set aside | C．set up | D．set down |
According to a UN report，one third of the world population have no _________ to clean drinking water and health care.
| A．means | B．approach | C．channel | D．access |
Liza _ ___ well not want to go on the trip---she hates traveling.
| A．will | B．can | C． must | D． may |
Mr. Zhang is the best music teacher in our school, but he has hurt his left foot and cannot ________tomorrow's concert.
| A．take part | B．play a part in | C．participate in | D．participate |
Magaret was so ________ to hear any news of her lost son that she was almost driven mad.
| A．relevant | B．annoyed | C．bound | D．dying |