What do you know about twins?

What percentage of twin babies make up their own language?

• 80%

• 60%

• 40%

• 10%

In the 1700s, how many sets of twins did a Russian woman named Valentino Vasilyeva give birth to?

• 8 sets

• 12 sets

• 20 sets

• 16 sets

According to the text, what is a surefire way to tell identical twins apart?

• Looking at their hair color

• Looking at their fingerprint

• Looking at their eye color

• Looking at their shoe size

What is cryptophasia?

• A medical condition

• A type of food

• A type of animal

• A language developed between twins

What did researchers in Italy observe twins doing just a few months before birth?

• Sleeping peacefully

• Playing soccer

• Interacting in their mother's belly

• Singing songs

What is the unique characteristic of a belly button according to the text?

• It is a birthmark

• It is a tattoo

• It is a piercing

• It is a scar

What is the main topic of the text?

• Facts about twins

• Facts about animals

• Facts about languages

• Facts about sports

What is the main reason given in the text for polar bears having twins?

• Tight spaces in the Arctic

• High birth rate of polar bears

• Unknown reason

• Genetic mutation