John should have been aware of the _ of smoking to his health.
A: dangerous
B: danger
C: safety
D: safe
A: dangerous
B: danger
C: safety
D: safe
举一反三
- He should have been ________ what his junior officers were doing. A: aware B: aware of C: aware from D: aware off
- John put his wallet into the microwave oven ____. A: to keep it safe B: for keeping safe C: for the safety D: to be safe keeping
- He should have been ______ of what his junior officers were doing. A: involve B: realize C: aware D: unaware
- The author thinks ______. A: she should move out of the area where people smoke B: the smokers should go outside the room when they want to smoke C: his mother has realized the danger of smoking D: all the people have bad habits
- Quality and safety programs should ensure health and safety ___________ and _________.