What is the best title for the text?

A．The Way Human Beings Enjoy a Longer Lifespan

B．The Importance of Getting Rid of Air Pollution

C．Asian People are Suffering From Serious Air Pollution

D．Air Pollution Reduces the Lifespan by More Than One Year

解析：选D　标题归纳题。通读全文可知，文章第一段第一句“Air pollution shortens human lives by more than a year, according to a new study from a team of leading environmental engineers and public health researchers.”为全文的主题句，结合全文内容可知，文章通过介绍科学研究，说明空气污染导致人的寿命减少一年以上。故D项最适合作本文的标题。

七选五

(2019·惠州市第二次调研)

Gratitude is not only an art performed in daily life, but also part of our traditional virtue.Has your mother or friend told you that you're an ungrateful person? Do you feel unable to appreciate the world or people around you? Are you obsessed with things you don't have instead of being thankful for what you do have? __1__， then you will definitely need to work on being a more grateful person.

Showing gratitude has been put forward in the last few decades.__2__.But there are still some tips that help make it possible for you to practice gratitude.

Refusing to play the victim is the first step you're supposed to take.__3__.If you want to be grateful, stop complaining to the world, your teachers, your friends and your family about not putting themselves in your shoes, and focus on how much they've helped and cared about you.

Volunteering in your community is another effective way to show how grateful you are for what the world has given you.Whether you're helping clean up a local park, working in a soup kitchen, or teaching children or adults in your community to learn to read, your perspective towards life will change positively.__4__.

__5__.You shouldn't always be good only to your close friends or family members.You can help a neighbor look for a lost dog.You can also help an old lady carry her groceries.You don't have to search for these opportunities purposely.Sometimes they will present themselves.So when they come，act with generosity.You'll be more grateful for your role played in the world.