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b) when petroleum gets into an oil trap;
c) when the rocks prevent further migration of
petroleum;
d) when the rocks permit further

II. Test Your Understanding of the Words:

“essential” in line 14 passage 2 means:

(a) indispensable; (b) vital;

(c) requisite; (d) necessary.

III. Comprehension Quiz.

One of the first principles of petroleum geology was:

a) the origin of oil;
b) the entrapment of oil in anticlines;
c) the structure of anticlines;
d) the number of oil raps.

IV. Selecting the Main Idea:

The main idea of passage 2 is:

a) the origin of oil traps;
b) the structure of oil traps;
c) the essential features of oil traps;
d) the main forms of petroleum traps.

V. Choosing the Correct Translation for a Statement:

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

The accumulation of petroleum in
a trap is accomplished when the physical
properties and geometry of the rocks
prevent further migration.