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II. Test Your Understanding of the Words:

“decreasing” in line 7 means:

(a) expanding; (b) extending ;

(c) growing; (d) lessening.

III. Comprehension Quiz.

Primary migration is:

a) migration to the trap;
b) migration to the surface;
c) migration from the source rock to the permeable carrier
bed;
d) migration to the sedimentary basins.

IV. Selecting the Main Idea:

The main idea of passage 2 is:

a) reasons of migration;
b) ways of migration;
c) stages of migration;
d) types of migration.

V. Choosing the Correct Translation for a Statement:

Choose the most adequate option of the translation of the
following sentence:

Much of the uncertainty is
because of the uncertainty about the true
source rocks and their positions.

a) Багато є невпевнених у нафтоматеринській породі.

b) Більшість невпевненості є через нафтоматеринську
породу.