d.      Depth of less than 60 meter

3.      Comprehension

1)      How does sea water stay clean?

A.     It depends on the salt.

B.     People put some chemicals in it.

C.     The minerals in it help it stay clean

D.     The chemicals produced by the seaweeds help keep the water clean.

2)      Which of the following is true ?

A.     People can see most of the earth’s solid surface.

B.     Coral is a variety of animal life.

C.     There is only a narrow entrance between the Mediterraneans and the Pacific.

D.     All the oceans contain 35 parts of salt per thousand parts of water.

               3) Which of the following is no the condition needed for coral to grow

A. Clear water.            B. Plenty of light.

C. Plenty of the salt         (04教育资源网，转载请注明)

D. The proper water temperature

4)      How did the Dead Sea get its name ?

A.     Because people will die if they swim in it

B.     B.Because it is so salty that few things can live in it.

C.  Because it is near the Dead Valley.

D.  Because many people were drowned in it

5)      Why is the Dead Sea so salty?

A.     Because it is hot there.

B.     Because it is low-lying.

C.     Because hundreds of natural springs flow into it.

D.     All above.(04教育资源网，转载请注明)

4．Structure of the text

1).  Main idea.

  The passage is mainly about the sea, such as minerals and living things in the oceans of the world. We should realize it is necessary for everyone to love and protect the sea as well as the sea life.

2). Meaning of paragraph.

   Para.1: Vastness of the sea.

   Para.2: Salt and other minerals in the sea.

   Para.3: The Mediterranean Sea.

   Para.4: Coral’s living conditions

           5. Language Point

  Procedure:(04教育资源网，转载请注明)

  Step1: (Pick out the following sentences then explain)

1)      Seen from the space, the earth looks blue.

Meaning: If you look at the earth from space, it will appear blue;.

          Eg. Hunted everywhere, the wolf could find nowhere to hide

2)      That is 3.5% by weight.

by meaning according to.

Eg: In Britain, sugar is sold by the pound, eggs by the dozen and cloth by the yard.

He is paid by the day/week/month.

                   3) This is because two thirds of the earth’s surface is made up of vast oceans.

          Be made up of/ make up(04教育资源网，转载请注明)

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