----- Nội dung dịch tự động từ ảnh -----
B. If we can solve the problem, we will soon be the only ones left
C. Farmers use chemicals in order to grow better crops
D. Chemicals pollute the environment
5. What can be the best title of the passage?
A. Birds are in danger
C. the most successful animals
B. the threat to the environment
D. protect our earth
Task 3. Put a word/ phrase from the box in each gap to complete the following passage.
hold:
picks up; even: help: after: thickly;
little;
æ
hillsides
Wind, water, air, ice and heat all work to cause erosion. As the wind blows over the land, it
(1)
small grains of sand. When these grains of sand strike against solid rocks, the rocks
slowly worn away. In this way, (2)
of rocks or soil became loosened in any way, running water carries them down the (3)
very hard rocks are worn away by the wind. When parti
rocks and soil particles are carried into streams and then into the sea. Land that is covered with u
grass and other plants wears away very slowly, and so loses very (4)
the rocks and soil in place. Water that falls on grasslands runs away
of its soil. The roo
to slow
the melting snow turns into a large quantity of water that then runs downhill in streams. As a s
carries away some of the soil, the stream bed gets deeper and deeper. (8)
of such erosion, wide valleys are often formed.
plants help to (5)
slowly than water that falls on bare ground. Thus, forests and grasslands (6)
erosion. Even where the land is (7)
covered with plants, some erosion goes on. In the sp
thousands of y
WRITING
Task 1. Write the conditional sentences.
1. We will plant more trees. The
Task I
2. A