1. (2020九下·咸阳月考) 阅读短文内容，从各小题所给的四个选项中选出能回答所提问题或完成所给句子的一个最佳答案。

    Most animals on land are known to us, butmany living things underwater are not. Now let's get to know some of them.

   Sea Cucumber

   Sea cucumbers are strange animals sticks up.When summer comes, they stay deep to sleep because they are afraid of heat. Andwhen it is autumn, they move to shallow(浅的)water and get their food.

   Pike

   The pike is a kind of freshwater fish. Theyare good swimmers and like swimming near boats, waiting to be fed. They havesharp teeth to catch fishes. When they are young, they live in groups. However,when they grow up, they prefer to live alone.

   Cuttlefish

   A cuttlefish can swim quite fast, so it isalso called rocket(火箭)fish. It has eight arms and two feelers on its head, just around its mouth. Itejects ink(喷墨) when itis in danger. Its meat is delicious, and it is often the first choice for manypeople.

    Octopus

   An octopus has long arms, with which to catchfood and protect itself. When it is sleeping, one or two of its arms are stillon duty, keeping moving. Once it feels something dangerous, it can wake up atonce to take action.

1. （1） Sea cucumbers stay deep to sleep in summer because they.

   A . are afraid of high temperature B . want to get strong and fat. C . are afraid of their enemy D . want to live alone
3. （2） According to the passage, likes to swim near boats.

   A . the sea cucumber B . the pike C . the cuttlefish D . the octopus
5. （3） What happens if a cuttlefish meets its enemy?

   A . It rushes at the enemy at once. B . It cuts off one of its arms. C . It bites with its sharp teeth D . It ejects ink to the enemy.
7. （4） The ______ of an octopus can help protect it when in danger.

   A . colour B . arms C . sound D . smells