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__1. What are the erect plants with single woody steam capable of reaching a height of 20-25 feet upon maturity?
A. Trees B. Hurbs C.Vines D. Ornamental plants
__2. One importance of the trees to communities is that it provides construction materials. Which on is NOT a construction material delivered from the trees?
A. Lumber B. Rubber C. Plywood D. Board

3.As a student, what product from the fiber of trees do you benefit directly?

A. Lumber B. Pape C. Turpentine D. Fruit

4. How do trees help maintain ecological balance?

A. Trees protect the soil from soil erosion.

B. Trees takes in carbon dioxide exhaled by human and gives off oxygen which

is inhaled by man.

C. Trees provide food to humans and animals while humans take care of trees.

D. Trees contribute to the beautiful landscapes in the city and the countryside

5.How do trees help improve the atmosphere in a certain place?

A. Trees give a feeling of freshness and coolness.

B. Trees contribute to the beautiful landscapes in the city.

C. Trees prevent floods during rainy seasons.

D. Trees prevent the sedimentation of lakes and rivers.​