A good advertisement should ____ the consumers and direct their attention to the product.
| A．absorb | B．attach | C．call | D．attract |
_____________ cease（终止） advertising, prices would be significantly reduced.
| A．Were they to | B．Could they |
| C．If they | D．Would they |
Much labor would have been saved if the electronic computers_____________ before.
| A．had invented | B．were invented |
| C．should have been invented | D．had been invented |
There was a(n)________silence in the live interview，when no one knew what to say to the audience.
| A．ashamed | B．disappointed | C．desperate | D．awkward |
Doctors are doing research to find out what happens physically when people______ smoking.
| A．quit | B．decline | C．prevent | D．reserve |
Once you get _______ something, it is very hard to ________.
| A．addicted to; rid yourself of it |
| B．used to; rid yourself of it |
| C．accustomed to; be got rid of it |
| D．addicted to; get away with it |