Many wild animals will ________if people are allowed to kill as many as they wish.
| A．die out | B．die away | C．die down | D．die off |
Some people maintain that watching violence on TV is one of the major causes of __________ behavior and crime in society.
| A．artificial |
| B．automatic |
| C．aggressive |
| D．allergic |
To our surprise, we found the Queen's jewels __________ by special royal soldiers.
| A．guarded |
| B．trained |
| C．impressed |
| D．absorbed |
There is a（n）__________ of plants in the old man's yard, such as trees, flowers and grass.
| A．group |
| B．kind |
| C．amount |
| D．variety |
Nowadays, people get news around them and about the world from __________ media： on TV, on the radio, in the newspaper or on the Internet.
| A．formal |
| B．ordinary |
| C．various |
| D．normal |
（★ ★ ★） （2013 河南郑州模拟）As a couple, the Smiths can always make the __________ decision to work through their problems.
| A．conventional |
| B．courageous |
| C．conscious |
| D．compulsory |