IR2 Unit 1 Reading II Comprehension Questions

Philadelphia no longer locates pipes or cables underground.

• True

• False

Answer explanation

Paragraph 1

The collapse of underground structures sometimes kills people traveling on the surface.

• True

• False

Answer explanation

Paragraph 2

William Penn carefully planned Philadelphia’s

    underground environment in the 1680s. 

• True

• False

Answer explanation

Paragraph 4

Some residents of Philadelphia today use underground structures
    to hide things from city officials.

• True

• False

Answer explanation

Paragraph 4

Old infrastructure is easier to locate than new infrastructure.

• True

• False

Answer explanation

Paragraph 5

GPR can detect even non-metal items.

• True

• False

Answer explanation

Paragraph 8

By using GPR, the police easily recaptured

    twelve escaped prisoners.   

• True

• False

Answer explanation

Paragraph 9

Systems like Responder use radar or sonar to find out where old sewers are.

• True

• False

Answer explanation

Paragraph 10

Robots can discover problems by looking at pipes from the inside.

• True

• False

Answer explanation

Paragraph 10

The sewers under the White House were fixed by creating new pipes inside old ones.

• True

• False

Answer explanation

Paragraph 13