Read the excerpt from "On Becoming an Inventor" by Dean Kamen. When I was twelve years old and Barton, my older brother, was around fifteen, we took over the family basement. At first, I made a darkroom for developing pictures, and Bart was using it as his lab where he was raising about one hundred white rats, removing their thymus glands, and trying to figure out the glands' dysfunction. He wanted pictures taken of his experiment, doing the surgery on rats, and since I already had a darkroom, I took the pictures, though somewhat reluctantly. I didn't like the blood. Which part of the excerpt expresses an opinion? we took over . . . I made a darkroom for developing pictures . . . he was raising about one hundred white rats . . . I didn't like the blood.

Which best states a theme of "birdfoot's grampa”? a look before you leap. b technology nature. c respect one’s elders. d with age comes wisdom.

The “big dig” the “big dig” (the central artery/tunnel project) has been complex and challenging. located in boston, massachusetts, this tunnel is eight lanes wide and three-and-a-half miles long. what is most amazing about this tunnel is that it is constructed under a major highway and skyscrapers located in boston’s financial district. construction crews used “clamshell excavators” during this dig. these machines carved narrow trenches, and then a special substance was pumped into the trench to keep the dirt from caving in. finally, steel beams were lowered into the trench and concrete was pumped in. one problem that engineers faced while constructing the tunnel is the fact that the soil beneath boston is extremely loose and soggy. engineers solved this dilemma by freezing the soil and pumping very cold water into pipes beneath the city. to strengthen the soil even further, a special type of glue was injected into the ground to with the consolidation of the soil. 23 which phrase best defines the word excavator as used in the passage? a. a device used to measure underground temperatures b. a device used to level uneven surfaces c. a device used to move heavy objects d. a device used to dig holes

Lines 9-12 compare the "ashes of youth" to a deathbed twilight fire youth