6.001, Spring Semester, 2005--Quiz Il Now, suppose we evaluate the following expressions in a fresh env ironment (define foo (set!-start 5)) (set! -careful foo 1 Att ached is a partial env ironment diagram associated with t his evaluat ion. You will notice that the frames are labeled El, etc, and the pro cedure ob jects are labeled Pl, etc. You should complete t his diagram to reflect the st ate of the env ironment after evaluat ion of bot h expressions in order, and then use the result s to answer the follow ing quest ions. Question 5: For each of t he following environments, indicate the value of it s enclosing environment. using one of GE, El, E2, E3 E4 or none or not show Enclosing env ironment El Question 6: For each of the follow ing variables, indicate the value to w hich it is bound, using a number, a symbol, a list of numbers or symbols, or one of P1, P2, P3, P4, P5 Variable Environment value to which bound set!-start GE et ! -careful GE val GE act ion val E3 current￾
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