B2-1 ODF -CCA

Although our feet are naturally________

, most runners

wear shoes.

• Groundbreaking

• shock-absorbent

• energy efficient

• Anti-reflective

• Eco-friendly

_________ research has shown

that animals are much smarter than we realized.

• Groundbreaking

• shock-absorbent

• energy efficient

• Anti-reflective

• Eco-friendly

_________

diets don't include

a lot of meat.

• Groundbreaking

• shock-absorbent

• energy efficient

• Anti-reflective

• Eco-friendly

__________

glasses help

night vision.

• Groundbreaking

• shock-absorbent

• energy efficient

• Anti-reflective

• Eco-friendly

Hibernation is an _______ for animals to spend the winter.

• Groundbreaking

• shock-absorbent

• energy efficient

• Anti-reflective

• Eco-friendly

As chocolate contains _______ substances, it's forbidden for racehorses!

• streamlined

• performance-enhancing

• energy efficient

• Anti-reflective

• Eco-friendly

The seal's ________ shape helps it swim faster.

• streamlined

• performance-enhancing

• energy efficient

• Anti-reflective

• Eco-friendly