The Dead Sea is not a sea. It is a big l  1  in the Jordan valley. It is near the city of Jericho. The river Jordan runs into the Dead Sea. It c  2  from the north. The lake is 400 meters below sea level. The sun is hot there a  3  the water is salty. Fish cannot live in the salty water and plants cannot grow near it. People cannot swim w  4   in the Dead Sea, but they can float on the water. The water is very blue and the air is c    5. In the winter people come to the lake. They sit in the sunshine or bath in the warm water.

1.________   2.________   3.________   4.________   5.________

The Dead Sea contains about 250 parts of salt to every thousand parts of water.
The Dead Sea contains about 25% of salt _________ _________

The dead forests ______ into layers (层，地层) of coal (煤) by now.

[    ]

A. turned　　   B. have been turned

—I’m dead tired, I can’t walk any farther, Jenny.

—______, Tommy. You can do it.

A. No problem            B. No hurry          C. Come on         D. That’s ok