After three hours' discussion, the meeting finally ________ without any agreement on the issue.
| A．broke out | B．broke down |
| C．broke away | D．broke through |
Eggs, meat, vegetables and other foods can easily be poisoned by microorganisms such as ______.
| A．phenomena | B．dilemma | C．diploma | D．bacteria |
.Some people say more but do less ______ others do the opposite.
| A．once | B．when | C．while | D．as |
Generally speaking, ______ according to the directions, the drug has no side effect.
| A．when taken | B．when taking | C．when to take | D．when to be taken |
My daughter, _________ all kinds of meat, would not like to eat any vegetable, which worries me a lot.
| A．devoted to | B．addicted to | C．accustomed to | D．exposed to |
The wide spread of super hybrid rice around the world ______ the lives of millions and millions of people suffering from hunger to a great level.
| A．has improved | B．is improving | C．improved | D．has been improving |