21. From the passage, we know that _____.

A.Billy can't hear B.Billy can't see

C.Billy can't walk D.Billy can't talk

22.How did Billy's mother help him?

A.By describing everything to him.

B.By asking teacher for advice.

C.By teaching him how to draw.

D.By sending him to his dream school.

23.When did Billy begin teaching himself computer programming?

A.When he was in Seven Grade.

B.When he was 7 years old.

C.When he was high school.

D.When he was at university.

B

If you could have one superpower, what would it be?

Dreaming about whether you would want to read minds, see through walls, or have superhuman strength may sound silly, but it actually gets to the heart of what really matters in your life.

Every day in our work, we are inspired by the people we meet doing extraordinary things to improve the world.

They have a different kind of superpower that all of us possess: the power to make a difference in the lives of others.