Madame Curie is believed radium.

智慧职教: Madame Curie is believed ___ the radium.

Madame Curie is believed _________ radium (镭). A: discovering B: having discovered C: to have discovered D: to discover

Madam Curie is believed ___ the radium. A: having discovered B: to discover C: to have discovered D: discovering

Madame Curie is believed ____ the radium. A: discovering B: having<br/>discovered C: to have discovered D: to discovered

“If Madame Curie had not happened to leave a photographic plate in a drawer with a chunk of pitchblende, the world today would not know about radium." The statement commits the fallacy of:

If<br/>Madame Curie had not happened into leave a photographic plate in a<br/>drawer with a chunk of pitchblende, the world today would not knowabout radium. A: into B: with C: not D: about