In this experiment, the famous professor showed three different____ to the study of physics.
A.means | B.methods | C.ways | D.approaches |
Over the past decades , sea ice _____in the Arctic as a result of global warming.
A.had decreased | B.decreased | C.has been decreasing | D.is decreasing |
--I would why he ____so strangely these days.
--Recent pressure at study may account for his behavior.
A.was acting | B.is acting | C.acted | D.acts |
--Please tell the court what really happened.
--Oh, I ____ , and I hit a parked car.
A.wouldn’t pay attention | B.hadn’t paid attention |
C.haven’t paid attention | D.wasn’t paying attention |
According to the lastest study ,the population of Xuzhou has grown to more than 30 times____it was in 1949. The figure ____to 9.5 million by the end of 2010.
A.that , will rise | B.that ,will have risen | C.what , will rise | D.what ,will have risen |
. In September 2008 , China’s key milestone in space travel_____when Zhai Zhigang conducted the first space walk.
A.reached | B.was reached | C.has reached | D.had been reached |