30. British scientists said teenagers are programmed to take risks because they enjoy the thrill of dangerous situations________ others.
| A．more than | B．less than | C．other than | D．rather than |
The society was set up to endangered species form extinction.
| A．deserve | B．preserve | C．observe | D．reserve |
Wetoday not a victory of a party but a celebration of freedom, symbolizing an end as well as a beginning, signifying renewal as well as change.
| A．enjoy | B．observe | C．watch | D．suspect |
People think “SOS” is the simplest and commonto make, in time of danger or disaster.
| A．mark | B．sign | C．signal | D．remark |
There has been noso far from the police about the cause ofthe poor girl’s death after the college entrance examination.
| A．comment | B．command | C．discussion | D．reaction |
_______ the top leader, all of the other officers entered the hall.
| A．To follow | B．Followed | C．Following | D．Follows |