TOEFL iBT Diagnostic

Page 1 of 5

Question 1

"During the 19th century, the advent of the steam engine revolutionized transportation, allowing goods to be moved across vast distances with unprecedented speed. This proliferation of trade networks fostered economic growth in previously isolated regions."

The word "proliferation" in the passage is closest in meaning to:

A) stagnation B) transformation C) expansion D) consolidation

Question 2

"Unlike most amphibians, which lay their eggs in water, the completely terrestrial desert rain frog buries its eggs deep in the moist sand. The froglets bypass the tadpole stage entirely, emerging from the eggs fully formed and ready to navigate their arid environment."

According to the passage, how does the desert rain frog differ from most other amphibians?

A) It requires standing water to reproduce successfully. B) It skips the tadpole stage of development. C) It lays its eggs on the surface of the sand. D) It emerges from the egg as a swimming tadpole.

TOEFL Expert Tip: Vocabulary in Context

In the TOEFL Reading section, "Vocabulary in Context" questions do not just test if you know the dictionary definition of a word. They test if you can use the surrounding sentence clues to deduce the meaning. If you don't know a word, try replacing it with the answer choices to see which one makes logical sense in the sentence.

Next Page: Questions 3 & 4

TOEFL iBT Diagnostic

The word "proliferation" in the passage is closest in meaning to:

According to the passage, how does the desert rain frog differ from most other amphibians?

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