1. (2021九上·余杭月考) 通读下面短文，掌握其大意，然后在各题所给的四个选项(A、B、C和D)中选出一个最佳选项。

“Mom! I found one! I found a rock!”

I heard those1 again and again last summer as I sat by the window, which faces a park in the small town where I live.

The Kindness Rocks Project, which was2 a few years ago by a mom in Massachusetts, has3around the world. Kids, families, and people of all ages are taking part in painting rocks,4rocks, and finding painted rocks all over the place. Some post5 of the rocks on social media(媒体), and others6 move the rocks for someone else to find. Some take the7 home and then replace them with new ones that they8 and hid.

Nine-year-old twins Harry and Hannah DeVrieze have9 hundreds of rocks with their parents. Most evenings, the family and their small dog walk around with a wagon (小推车) full of rocks that they hide as they10.

“It's a fun family11,” Hannah says.

“We will do it in the winter too,” Hannah says.

Ben Burinsky, age nine, and his brother, Luke, age seven, were12 relatives when they found their first painted rock in a park. They were so13 that they went home and painted their own rocks, then hid them for others to find.

“My boys loved finding the rock in the park, especially since it was a superhero,” their mother, Judy Burinsky, says. “I love how something so14 can bring a smile to my children's faces.15, they learn the value of giving back to others.”