A.small, thin pieces of steel |
B.long, thin pieces of branches |
C.thin, hard, pointed leaf |
D.small, thin pieces of sticks |
A.The greatest desert makers are human beings. |
B.There aren't any living things in the deserts. |
C.Deserts have been changing quickly. |
D.The size of the deserts is always growing. |
A.the growth of deserts |
B.desert climate |
C.natural changes |
D.the disappearance of desert |
A.Deserts are lands of hardness, silence and space. |
B.The deserts of the world are changing from time to time. |
C.Man is to take measures to control the growth of deserts. |
D.Deserts have grown at a fast pace in the past 10 years. |