The old methods have ____the best of all.
A: been proved being
B: been proved to be
C: proved being
D: proved as
A: been proved being
B: been proved to be
C: proved being
D: proved as
举一反三
- It had been proved that corn and potatoes have high nutritional value.
- Since 1939, numerous scientific studies ______. A: proved smoking causes fatal diseases B: proved smoking causes life-shorting diseases C: proved smoking is a health risk D: had been made to prove whether smoking causes life shorting
- As time went by, the plan stuck（）fairly practical. A: to proved B: to proving C: proved D: to be proved
- What he had said at the meeting________ true. A: proves B: is proved C: proved D: was proved
- It has been proved what the brains of men and women are not entirely the same.