After the earthquake, the number of dead increased rapidly.

He read scores of books.

He thought for a few seconds before giving an answer.

A composite number, unlike a prime number, is represented by the product of two or more natural numbers.

He used his alphanumeric skills to create a computer program.

Saburo is my best friend.

Suro is my best friend.

Kazumasa is my best friend.

The doctor measured my pulse rate.

My heart rate increases after exercise.