They are , unique and irreplaceable.
A. valueless
B. worthless
C. priceless
查看答案
Which of the following pairs are synonyms?
A. light, night
B. expand, expend
C. valuable, invaluable
D. push, draw
Which of the following pairs are antonyms?
A. different, indifferent
B. edible, inedible
C. nonmoral, amoral
D. unfortunate, misfortunate
An audiometer is a kind of instrument for measuring the acuity of ____?
A. tasting
B. speaking
C. seeing
D. hearing
Cosmism is the theory of _____.
A. evolution
B. universe
C. astronomy
D. globe