27.According to the passage, people in the U.S. still have a chance of contracting (A) yellow fever. (B) encephalitis. (C) malaria. (D) filariasis.

28.The final sentence of the passage implies that the writer thinks (A) disease-carrying mosquitoes still pose a significant threat. (B) screens and insect repellent are ineffective protection against mosquitoes. (C) the threat of disease being transmitted by mosquitoes no longer exists in the U.S. (D) screens and insect repellent are the best protection against mosquitoes.

27.According to the passage, people in the U.S. still have a chance of contracting (A) yellow fever. (B) encephalitis. (C) malaria. (D) filariasis.

其他試題

27.According to the passage, people in the U.S. still have a chance of contracting
(A) yellow fever.
(B) encephalitis.
(C) malaria.
(D) filariasis.