21. Why do people call those fish are seahorses?

Because they are horses live in the sea.

Because their heads look like the head of a tiny horse.

Because they can run as fast as a horse.

Because they can swim.

(Dẫn chứng: Câu đầu tiên: Seahorses are tiny fishes that are named for the shape of their head, which looks like the head of a tiny horse.)

22. Where will you find seahorses?

You’ll find seahorses in the midnight zone.

You’ll find seahorses in the cold water.

You’ll find seahorses on the beach.

You’ll find seahorses in the world’s tropical waters.

(Dẫn chứng: Câu thứ ba: You'll find seahorses in the world's tropical waters, swimming upright among seaweed and other plants.)

23. What do baby seahorses do after they are born?

They swim to corals.

They return to the pouches.

They must find food and hide from predators as soon as they’re born.

They swim up and down slowly.

(Dẫn chứng: Câu cuối: They must find food and hide from predators as soon as they're born.)

24. Which part of seahorses' bodies will help them catch food and stick to corals? 

pouches

tails

tiny heads

back fins

(Dẫn chứng: Their tails are flexible. It can catch food.)

21. Because their heads look like the head of a tiny horse.

=> Dẫn chứng: Seahorses are tiny fishes that are named for the shape of their head, which looks like the head of a tiny horse

22. You’ll find seahorses in the world’s tropical waters.

=> Dẫn chứng: you'll find seahorses in the world's tropical waters, swimming upright among seaweed and other plants

23. They must find food and hide from predators as soon as they’re born.

=> Dẫn chứng: Unlike kangaroos, baby seahorses do not return to the pouch. They must find food and hide from predators as soon as they’re born.

24. tails

=> Dẫn chứng: Their tails are flexible. It can catch food. It is very helpful when seahorse want to stick themselves to corals, too