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3 years ago

Which phrase best defines the word excavator as used in the passage?

English

2 answers:

Monica [59]3 years ago

8 0

i need to see the passage

sergejj [24]3 years ago

4 0

Answer:

this is the passage

Explanation:

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 help with the consolidation of the soil.

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The image below shows the food pyramid you were given.

This kind of representation of food groups may be too complex for preschoolers. The best way to represent this topic to children that young is by simpler categorizations, drawings they could relate to more, and vocabulary that is as simple as possible. In preschool, some children are just beginning to read, and they are most likely not to understand the meaning of words such as proteins.

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