READING SKILLS 1-5

The city of Fort Knox, Kentucky

The federal gold depository

The U.S. army post at Fort Knox

Gold bullion

The Massive Concrete Vault

Fort Knox Security

Where the United States Keeps Its Gold

A Visit to Kentucky

The hardness of diamonds

Identifying minerals by means of a scratch test

Feldspar on the Mohs' scale

Recognizing minerals in their natural state

the hardness of a mineral can be determined by its ability to make a mark on other minerals

diamonds, with a hardness of 10 on the Mohs' scale, can scratch all other minerals

a softer mineral cannot be scratched by a harder mineral

talc is the first mineral listed on the Mohs' scale

Vaccines provide immunity to specific diseases.

Vaccines contain disease-causing microorganisms.

Vaccines are derived in different ways.

New approaches in administering vaccines are being developed.

Two

Three

Four

Five

have relatively thin walls

send blood to the atria

are above the atria

force blood into the arteries

As the heart beats

Between heartbeats

Before each contraction of the heart

Before it is received by the atria

the atria

the ventricles

the right atrium and ventricles

the left atrium and ventricles

it is a deeply colored liquid

blood cells have been taken out of it

patients are often transfused with it

it is generally more important to the patient than other parts of whole blood

It is different from plasma.

It cannot be dried.

It is impossible to keep it in storage for a long time.

It is a clear, colorless liquid.

has been around for a while

does not exist

is a very recent idea

is an idea that developed during the present century

He suggested the concept for a national university to Congress.

He chose a location for the national university.

He left money in his will for a national university.

He succeeded in establishing a national university.

He was interested in doing charity work and good deeds for the public.

He was a member of Congress.

He was interested in the idea of a national university.

He was active in the early twentieth century.

the cause

the beginning of the present century

the original idea

Congress