Choose the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
51.The teacher said that this water impure and couldn’t be used in our experiment.
A. fresh B. contaminated C. clean D. limited
52. If tourists leave litter after the picnic, they may cause pollution.
A. drop B. depart C. escape D. disappear
51.The teacher said that this water impure and couldn’t be used in our experiment.
A. fresh B. contaminated C. clean D. limited
52. If tourists leave litter after the picnic, they may cause pollution.
A. drop B. depart C. escape D. disappear
51. B
52. A