As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.
| A．exposure | B．distribution | C．expansion | D．emission |
相关试题
Mr. Han, my neighbor, is always helping those who are in trouble without expecting anything __________.
| A．in turn | B．in return | C．in detail | D．in addition |
He is very sick. I insist that a doctor __________ immediately.
| A．has been sent for | B．sends for | C．will be sent for | D．be sent for |
In the novel, the two cities referred to __________ London and Paris.
| A．be | B．being | C．are | D．was |
He was down wit
h the flu, and __________ couldn’t come to the party.
| A．moreover | B．meanwhile | C．therefore | D．besides |
相关知识点
推荐套卷
粤公网安备 44130202000953号