Experiments of this kind___in both the U.S. and Europe well before the Second World War
| A．have conducted |
| B．have been conducted |
| C．had conducted |
| D．had been conducted |
Too many sweets and not enough exercise will make you ______ weight.
| A．put on | B．put up | C．get up | D．get on |
Mr. Smith had a headache that was killing him, so he _____ his doctor to find the cause.
| A．consulted | B．charged | C．allowed | D．admired |
I almost didn’t recognize Jane when I came across her in the street. She had become so _____ after losing twenty pounds .
| A．raw | B．slim | C．protective | D．independent |
David was bad at his studies, so when I was told he did well in the final exam this time, I found it really ______.
| A．unbelievable | B．harmful | C．rude | D．fundamental |
Mary is fond of the dress in the store, but it is too expensive, so she won’t take it without a _____.
| A．scene | B．phrase | C．discount | D．measure |