Unit 3 课下能力提升(十二)
Ⅰ.单项填空
1．I was ________ for about half an hour on the way here in the traffic jam, thus causing the delay.
A．held back B．held up
C．held out D．held on to
2．The ________ look on the girl's face showed that she was greatly terrified at the ________ news.
A．terrified; terrifying B．terrified; terrified
C．terrifying; terrifying D．terrifying; terrified
3．At one time he was wellknown for his song but later his taking drugs left a bad ________ on people.
A．affect B．attraction
C．impression D．action
4. In fact, fuels we burn and plant foods we eat ________ their chemical energy in the form of heat energy.
