55. According to the passage, which of the following statements about foggers is true?
(A) They can cause a fire.
(B) They do not stay on furniture.
(C) They can kill most insects.
(D) They do not contain chemicals.
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統計: A(268), B(34), C(72), D(19), E(0) #1945530
統計: A(268), B(34), C(72), D(19), E(0) #1945530