The author's description of the negative side of civilization mentions all of the following EXCEPT ______.
A. chemical warfare
B. the decrease of fresh air
C. the greenhouse effect
D. nuclear plants
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According to Chomsky's LAD theory, why do young children learn language so easily？ Click on 2 answers.
A. They have inherited an interest in language from their parents.
B. Their genes are beginning to develop, so they are eager to learn.
C. They have the innate ability to understand the universal grammar.
D. They have innate language skills so that they can naturally learn a languag
What does the professor imply when he says this:
A. The caterpillar's life purpose is almost complete.
B. The caterpillar will soon emerge from the pupa.
C. The caterpillar has migrated to a new habitat.
D. The caterpillar is about to lay its eggs.
The word cornerstone in Paragraph 1 is closest in meaning to ______.
A. foundation
B. centralization
C. backbone
D. milestone
According to the professor, what functions does echolocation serve for marine mammals？ Choose 2 answers.
A. Navigating their environment.
B. Socializing in the pod.
C. Identifying individual whales.
Detecting the location of their prey.
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