2. An argument was _________ because they disliked each other so intensely.
　　A. possible
　　B. probable
　　C. inevitable
　　D. decisive

　　3. An elephant's trunk is its most noticeable ________
　　A. Specific
　　B. characteristic
　　C. peculiar
　　D. particular

　　4. Animals can become usually_________ when they are upset by a sudden environmental change.
　　A. vigorous
　　B. predominant
　　C. aggressive
　　D. irritable

　　5. Anything that is able to flow as liquid is a kind of ________ substance.
　　A. mobile
　　B. variable
　　C. fluid
　　D. movable

　　6. Anything that is dropped from a height falls towards tile center of the earth because of the pull of _________.
　　A. weight
　　B. attraction
　　C. gravity
　　D. density

　　7. Applicants are _________to provide evidence that their English is good enough to study in the United States.
　　A. demanded
　　B. obliged
　　C. due
　　D. necessary

　　8. Are the apples __________enough to eat yet?
　　A. mature
　　B. big
　　C. adult
　　D. ripe

　　9. Are you ________ when you say that you will help me?
　　A. honest
　　B. frank
　　C. sincere
　　D. profound

　　10. _________ are you to leave your post.
　　A. In any case
　　B. In no case
　　C. Without question
　　D. Out of the question