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Are you a SpongeBob fan? In the cartoon, the jellyfish can produce delicious jelly. So are jellyfish made of jelly? Of course not. In fact, jellyfish can’t really produce jelly. Jellyfish are a kind of simple sea life. They have lived in the oceans for at least 500 million years. Some jellyfish live in deep and cold sea. Some others prefer shallow and warm waters.

Jellyfish have soft and colorful bodies. Their bodies are made of more than 90 percent water. Jellyfish also have several tentacles(触须). They look interesting. However, you should not touch them because they are very dangerous. Jellyfish can sting(刺) with their tentacles. They use them to hunt small fish. Jellyfish usually don’t hurt humans. Most jellyfish stings happen when someone touches their small jellyfish. Even a dead jellyfish can sting! In the cartoon, SpongeBob can have tasty jelly by squeezing a jellyfish. But in real life, you should never touch a jellyfish!

1.Which of the following is NOT true?

A Jellyfish can’t really produce jelly.

B In the cartoon, the jellyfish can’t produce delicious jelly.

C Jellyfish are a kind of simple sea life.

D Jellyfish aren’t made of jelly.

解析：选B。细节理解题。根据第一段第二句In the cartoon, the jellyfish can produce delicious jelly.可知，在漫画中，水母能产生美味的果冻，故选B。

2.From the first paragraph we can learn jellyfish ______.

A have lived in the oceans for 500 million years

B have lived in the oceans for no more than 500 million years

C have lived in the oceans for less than 500 million years

D have lived in the oceans for at least 500 million years

解析：选D。细节理解题。根据第一段第七句They have lived in the oceans for at least 500 million years. 可知它们在海洋中生活了至少5亿年，故选D。

3.What does the underlined word “shallow” mean in Chinese?

A 浅的.

B 清澈的.

C 蓝的.

D 冰冷的.

解析：选A。词义猜测题。根据第一段最后两句Some jellyfish live in deep and cold sea. Some others prefer shallow and warm waters. 可知deep对应shallow，cold对应warm，所以shallow的意思与deep相反，译为“浅的”，故选A。

4.Why can’t we touch Jellyfish?

A Because they will die.

B Because they are very dangerous.

C Because they have several tentacles.

D Because they can produce jelly.

解析：选B。细节理解题。根据第二段However, you should not touch them because they are very dangerous.可知是因为水母危险，所以我们不能触碰他们，故选B。

5.When will jellyfish hurt people?

A When they produce jelly.

B When they swim in cold sea.

C When people touch their small jellyfish.

D When people swim around them.

解析：选C。C 细节理解题。根据第二段Jellyfish usually don’t hurt humans. Most jellyfish stings happen when someone touches their small jellyfish.可知，大多数水母会在人类触碰它们的小水母时会刺伤人类，故选C。