Which of the following arthropod only sucks human blood()
A、Human lice
B、Fleas
C、Aedes mosquitoes
D、Anopheles mosquitoes
A、Human lice
B、Fleas
C、Aedes mosquitoes
D、Anopheles mosquitoes
A、In 2008, the collapse of two big Wall Street firms plunged the US economy into the “The Great Recession”.
B、It was not the worst financial downturn since the 1930s.
C、That meant many people lost their money.
D、That meant the economy was weak.
A、Cysteine
B、Glycine
C、Methionine
D、Threonine
A、Blood sucking infection of larvae sting
B、Blood sucking infection of adult sting
C、Transmission through eggs
D、Fleas feces contaminates human wounds
A、Thick egg shell
B、Ascaroside layer
C、Protein membrane
D、Fertilization membrane
A、Echinococcus granulosus
B、Spirometra mansoni
C、Hymenolepis diminuta
D、Diphyllobothrium latum
A、Crush a tick with your fingers
B、After removing the tick, thoroughly clean the wound and your hands with 75% alcohol
C、Remove the tick as soon as possible.
D、Don’t twist or jerk the tick; this may cause the mouth-part broken off and remain in the skin tissue
A、Chigger adults
B、Chigger larvae
C、hard tick
D、soft tick
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