Hardly a month goes by without ______ of another survey revealing new depths of scientific

Without his assistance, I ________ the research last month.A: would not have completedB;

A．By name.B．By number.C．By location.D．By month.

He usually goes to beijing by （).A.an airB.airC.the airD. airing

● An internet is a combination of networks connected by （71） . When a datagram goes from a

Tina hardly tells her secrets to her friends. She probably goes to sleep

（) gifted a person is, he can hardly expect to make progress without hard work.A、Wha