Exercise S29

The difference between the living conditions in the countryside and in towns has been eliminated.

• Correct

• Incorrect

A reorganization of the brain cells occurs during adolescence.

• Correct

• Incorrect

The radiation levels from a computer display terminal is well below presently accepted standards of exposure.

• Correct

• Incorrect

The tropical fish were transferred to another department.

• Correct

• Incorrect

Mathematics are important for those students studying physics.

• Correct

• Incorrect

Pollution, together with water erosion, is taking its toll on the buildings.

• Correct

• Incorrect

A picnic in the park and a visit to the National Museum is planned for the tour group.

• Correct

• Incorrect

That species of butterfly are commonly seen in many parts of North and South America.

• Correct

• Incorrect