it is imperative you notice the context clues and logical indicators
radial symmetry, usually starlike
you don't know "radial"? no worries, you do for sure know "starlike"
thought to have evolved...
immediate alarm call. why not just "having evolved" — why exactly "thought to have evolved"?
applying genomic knowledge
to what end tho? why is the genomic knowledge of acorn worms so necessary?
parentheses are often used to "hide" useless info. granted, so far in SAT, they have always contained very valuable data.
думайте...