STRUCTURE TOEFL PREDICTION

_______ range in color from pale yellow to bright orange.

• Canaries which

• Canaries

• That canaries

• Canaries that are

_______ of precious gems is determined by their hardness, color, and brilliance.

• The valuable

• It is the value

• It is valuable

• The value

_______ a tornado spins in a counterclockwise direction in the northern hemisphere, it spins in the opposite direction in the southern hemisphere.

• However

• Because of

• Although

• That

The Caldecott Medal, _______ for the best children's picture book, is awarded each January.

• a prize

• which prize

• is a prize which

• is a prize

The horn of the rhinoceros consists of a cone of tight bundles of keratin _______ from the epidermis.

• grow

• grows

• growing

• they grow

Most species of heliotropes are weeds, _______ of them are cultivated.

• some

• but some

• for some species

• some species

Thunder occurs as _______ through air, causing the heated air to expand and collide with layers of cooler air.

• an electrical charge

• passes an electrical charge

• the passing of an electrical charge

• an electrical charge passes

Researchers have long debated _______ Saturn's moon Titan contains hydrocarbon oceans and lakes.

• over it

• whether it

• whether

• whether over

Nimbostratus clouds are thick, dark grey clouds _______ forebode rain.

• what

• which

• what they

• which they

_______ in several early civilizations, a cubit was based on the length of the forearm from the tip of the middle finger to the elbow.

• It was used as a measurement

• A measurement was used

• The use of a measurement

• Used as a measurement