B. To free her daughter from the feeling of difference

C. To meet the demand of her daughter

D. To cure her daughter of cancer.

6 What can we infer about Danielle from the passage?

A. She believes in her daughter's cure B. She is good at making bunny dolls.

C She is a thoughtful mother. D. She likes a bunny doll with one eye.

7. What did Brynn mean by saying "She matches me!"？

A. Her mother was comforting her.

B She only deserved to own the disabled bunny doll.

C. She was glad to receive the disabled bunny doll.

D. She felt down when she saw the disabled bunny doll.

Cities are likely to be affected by overheating, thanks to something called the urban heat island effect. Cities tend to be short of trees, which provide shade, and they are covered with black pavement, which absorbs heat from the sun. Think of how it feels to wear a dark shirt versus a white shirt on a sunny day. A black shirt absorbs light, heating you up. But a white shirt reflects light, keeping you cool.

The average temperature in a city of a million or more people can be more than 5 degrees hotter than surrounding areas. That extra 5 degrees can turn a hot day from uncomfortable to deadly. As temperatures rise, cities will be an especially dangerous place to be during a heat wave. To protect public health, city officials are going to make the city cooler.

As part of that effort, Los Angeles is coating its roads in CoolSeal, a gray paint that keeps streets and parking lots 10 degrees cooler than black asphalt（沥青）. It will help Angelinos save money during the summer, when air conditioning sends power bills soaring. And it will save lives by lowering temperatures and improving air quality. Hot weather worsens air pollution by turning car exhaust into smog, which can make life miserable for people with asthma（哮喘）and other breathing problems.

Of course, LA will have to do more than paint over a few streets to cool off the city. Angelinos will also need to plant more trees and apply white paint to rooftops - at least those not already covered in solar panels. While LA is a pioneer of reflective streets, other cities, like New York, are already experimenting with reflective roofs or, like Melbourne, lowering the temperature by planting trees. LA is hardly alone in its effort to stay cool.

"This is an urgent challenge, and it's much bigger than one person," said Mayor Garcetti in a recent statement. "Climate change is a fact of life that people in Los Angeles and cities around the world live with every day."

8. Which of the following contributes to the urban heat island effect?