TOEFL_Error Recognition #2

A variation of collodion photography was the tintype, which captured images on a black or dark brown metal plate instead from on glass.

• variation

• which

• or

• instead

In cases of minor injury to the brain. Amnesia is likely to be a temporarily condition.

• In cases of

• to

• likely

• temporarily

The system of chemical symbols, first devised about 1800. gives a concise and instantly recognizable description of a element or compound.

• system

• instantly

• a

• or

The fact that white light is light composed of various wavelengths may be demonstrating by dispersing a beam of such light through a prism.

• The fact

• composed of

• demonstrating

• such

Over the course of history, much civilizations developed their own number systems.

• Over

• much

• their own

• systems

In the United States during the Second World War, each trade unions and employers avoided federal limits on wages by offering employees nontaxable medical benefits.

• each

• and

• by

• employees

Philosophy is the study of the nature of reality, knowledge, existent, and ethics by means of rational inquiry.

• the study

• existent

• ethics

• by means

Poems vary in length from brief lyric poems to narrative or epic poems, which can be as broad in scope than a novel.

• length

• from

• narrative

• than

The population of California more than doubled during the period 1940-1960, creating problems in oad-building and provide water for its arid southern section.

• more than

• during the

• provide

• southern section

Although based it on feudal models, the colony of Pennsylvania developed a reputation for a progressive political and social outlook.

• based it on

• developed

• reputation for

• progressive political