The rewards you get in this job are in direct __________ to the effort you put in.
A. population
B. proportion
C. popularity
D. populous
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Which word with the diphthong（双元音) is different？（)
A. door
B. affluent
C. actual
D. tourist
Which word with the diphthong（双元音) is different？（)
A. where
B. fear
C. their
D. scare
Which invention was made for navigation？（)
A. gunpowder
B. papermaking
C. printing
D. compass
Which of the following statement is not a feature of an argument？（)
A. It must have a debatable issue or topic
B. It has to give one or more reasons
C. It must have a clear conclusion
D. It is similar with a quarrel
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