TOEFL review for partial 2

Most folk songs are ballads _______ have simple words and tell simple stories.

• what

• although

• who

• that

After its introduction in 1969, the float process _______ the world's principal method of manufacturing flat sheets of glass.

• by which it became

• it became

• became

• which became

Dolphins lack vocal cords but they have a large, oil-filled organ called the "melon" which with they can produce a wide variety of sounds.

• A

• B

• C

• D

There are thousands of kinds of bacteria, many of whom are beneficial.

• A

• B

• C

• D

_______ begin their existence as ice crystals over most of the Earth seems likely.

• Raindrops

• If raindrops

• What if raindrops

• That raindrops

Scientists cannot agree on _______ related to other orders of insects.

• that fleas are

• how fleas are

• how are fleas

• fleas that are

A test pilot tries out new kinds of aircraft to determine if are they safe.

• A

• B

• C

• D

Art critics do not all agree on what are the qualities that make a painting great.

• A

• B

• C

• D

_______ the finish line first, the runner gave up.

• Having failed to reach

• Having failed reaching

• He failed to reach

• That he failed reaching

_______ of the tranquilizer, the scientist put a tag on its ear and recorded details about the animal.

• While under the effect the deer

• While being under the effect the deer

• While the deer was under the effect

• While the deer under the effect