How Reinforced Concrete Was Perfected — Questions and answers

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What special building material did Grandma Katya mention?

Choices

  1. Golden-brown hair.
  2. Soft moss.
  3. Reinforced concrete. ✓
  4. Encyclopedia pages.

Answer: Reinforced concrete.

From page 2

What happened when Idris opened the glowing Encyclopedia?

Choices

  1. The room got very dark.
  2. His notebook disappeared.
  3. The room swirled with light, ready for an adventure. ✓
  4. Grandma Katya started to sing.

Answer: The room swirled with light, ready for an adventure.

From page 3

What year did Idris and Katya land in Paris?

Choices

  1. 1949
  2. 1849 ✓
  3. 2022
  4. 1749

Answer: 1849

From page 4

Why was Monsieur Coignet frustrated?

Choices

  1. He couldn't find his tools.
  2. His cement was terrible and kept cracking and crumbling. ✓
  3. He didn't know how to build a house.
  4. Katya kept bothering him.

Answer: His cement was terrible and kept cracking and crumbling.

From page 5

What did Idris compare the material needed to hold concrete together to?

Choices

  1. Leaves on a tree.
  2. Bones in our bodies. ✓
  3. Rocks in a river.
  4. Threads in a blanket.

Answer: Bones in our bodies.

From page 6

What did Idris realize reinforced concrete could be used for after his adventure?

Choices

  1. Only small flowerpots.
  2. Building bridges, skyscrapers, and carnival tents. ✓
  3. Mixing cement more easily.
  4. Making the Encyclopedia glow brighter.

Answer: Building bridges, skyscrapers, and carnival tents.

From page 9

What was the value of the global reinforced concrete market in 2022?

Choices

  1. Around 260 million USD.
  2. Around 260 billion USD. ✓
  3. Around 260 thousand USD.
  4. Around 26 billion USD.

Answer: Around 260 billion USD.

From page 10