The teacher required that all errors should be _______eliminated before the students turn in their term paper
A、deported
B、eliminated
C、deprived
D、implemented
Many other new techniques are now available that enable more research___ (do) in the test tube to see if chemicals produce harmful biological effects.
Let ’s personal feelings in making judgment.（）
A、setoff
B、setaside
C、setback
D、setup
Thetheoryofblackholesinspace__(accept)bymanyseriousscientistsandastronomers.
_______(safe)needs to be improved on the railways in that country