21 .The text describes amphibians as animals that ________.
A. do not have lungs
B. can live on land and in water
C. use their gills to eat and breathe
D. cannot swim very well
Thông tin: Many live mainly on land, but most spend at least some of their lives in water
22. According to the text, the world’s largest amphibian is a ________.
A. frog
B. toad
C. newt
D. salamander
Thông tin: The largest amphibian, the Chinese giant salamander, is 1.8m long
23. One of the differences between frogs and toads is that ________.
A. frogs have drier skins
B. frogs develop tails as adults
C. frogs can stay underwater longer
D. frogs lay eggs in strings
Thông tin :toads usually have rougher, drier skins =>Loại A
Some toads produce spawn in strings like necklaces=> Loại D
Không nhắc đến C-> Chọn B
24. Young frogs start to breathe with their heads above water when they ________.
A. develop lungs
B. develop internal gills
C. hatch out of their eggs
D. start eating insects
Thông tin :When it hatches, it is able to swim using its long tail, and it breathes through gills
25. The underlined word "predators" in the passage probably means ________.
A. animals that eat other animals
B. animals that feed on grass
C. amphibians living in water
D. amphibians living on land
predators:động vật ăn thịt
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