Fill each blank in the following passage with ONE suitable word. Write your answers in the spaces given. (15 pts)The mosquito is an insect that --(1)-- some of the worst diseases of man and animals. Certain kinds of mosquitoes carry the germs that cause --(2)-- serious diseases as malaria, --(3)-- yellow fever. When a mosquito “bites”, it may leave germs --(4)--. Many kinds of mosquitoes do not spread diseases, but they have --(5)-- “bites”.Mosquitoes are found in all parts of the world, -...
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Fill each blank in the following passage with ONE suitable word.
Write your answers in the spaces given. (15 pts)
The mosquito is an insect that --(1)-- some of the worst diseases of man and animals. Certain kinds of mosquitoes carry the germs that cause --(2)-- serious diseases as malaria, --(3)-- yellow fever. When a mosquito “bites”, it may leave germs --(4)--. Many kinds of mosquitoes do not spread diseases, but they have --(5)-- “bites”.
Mosquitoes are found in all parts of the world, --(6)-- near the North Pole. Most kinds of mosquitoes that carry diseases live in the hot, damp lands near the Equator. --(7)-- some countries, mosquitoes often gather in great swarms that look like clouds. They --(8)-- men, interfering with such work as fishing, lumbering, and mining.
Man controls mosquitoes in many --(9)--. Scientists have developed chemicals --(10)-- insecticides, which kill mosquitoes and other insects. Small amounts of these chemicals kill mosquitoes --(11)-- sprayed in home, garages where they grow. Mosquitoes --(12)-- their eggs in marshes, swamps and other pools of quiet --(13)--. Engineers may build canals through marshes --(14)-- drain off the water, and often fill small pools and swamps --(15)-- soil.