Led by Teens Give Back SATX, a group of teenagers in San Antonio are making a difference in the lives of those in need.

“Having a bed to go home to at night after a long day of work or school is comfortable,” said Addie Roberts with Teens Give Back SATX. With this in mind, Roberts and her friends decided to reuse used plastic bags. They wanted to make them become something invaluable for San Antonio’s homeless people.

Each sleeping mat (垫子) needs about 700 to 900 bags. It can take 15-20 hours to finish. Although creating these mats needs a lot of time and hard work, these teenagers still try to make a difference to their community. Over the past year, Teens Give Back SATX has made about 50 mats, changing many homeless people’s lives.

“In some temperatures, the mats can save lives by keeping people off the ground,” said Rex Brien, Vice President of Emergency Services for SAMMinistries. As the teenagers continue their work, they invite others to join their cause and make a difference.

1.What does the underlined word “invaluable” mean?

A Funny.

B Strange.

C Interesting.

D Important.

解析：选D。D 词义猜测题。根据前面提到的“making a difference in the lives of those in need”和“Having a bed to go home to at night after a long day of work or school is comfortable”和后面的“changing many homeless people’s lives.”可知，他们决定为那些需要帮助的人的生活带来实实在在的改变，于是将用过的购物袋做成圣安东尼奥无家可归者的无价之宝。故选D。

2.Which paragraph tells us why Roberts and her friends began the program?

A Paragraph 1.

B Paragraph 2.

C Paragraph 3.

D Paragraph 4.

解析：选B。B 段落大意题。根据第二段内容可知，罗伯茨说：“经过一天漫长的工作或上学后晚上有一张床可以依赖，这给我们带来了安慰。”考虑到这一点，罗伯茨和她的朋友们决定将用过的塑料袋重新用作圣安东尼奥无家可归者的重要之物，该段讲了罗伯茨的灵感来源。故选B。

3.How many mats has Teens Give Back SATX made?

A About 50.

B About 15.

C About 20.

D About 700.

解析：选A。A细节理解题。根据第三段最后一句“Teens Give Back SATX has made about 50 mats, changing many homeless people’s lives.”可知，在过去的一年里，他们制作了大约50个垫子。故选A。

4.What does Rex Brien think of these mats?

A Useful.

B Meaningless.

C Comfortable.

D Expensive.

解析：选A。A细节理解题。根据最后一段中的“In some temperatures, the mats can save lives by keeping people off the ground”可知，在某些温度下，这些垫子可以让人们远离地面，从而挽救生命。故选A。

5.What can be learned from the passage?

A Where there’s a will, there’s a way.

B Kindness can be found everywhere.

C Love me, love my dog.

D A man is never too old to learn

解析：选B。B推理判断题。根据全文内容可知，罗伯茨和她的同龄人将用过的购物袋重新用作圣安东尼奥无家可归者的无价之宝，为那些需要帮助的人的生活带来实实在在的改变，他们都在行善。故选B。