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If you’re new to San Francisco, paying the city a visit, or simply looking for a new playground for you and your dog, here are four of the finest dog parks in San Francisco.
◆ Corona Heights Dog Park
Often visited by residents from all over the city because of its nearness to the Randall Museum, Corona Heights Dog Park offers pets and owners breathtaking views, after a steep hillside climb, and a fenced dog area that allows dogs to let loose without a leash（狗链）. Owners will also enjoy the playground, tennis courts and basketball courts.
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Dolores Dog Park
The grounds of Dolores Park once served as camps for those who were left homeless by the 1906 earthquake, but now often visited by crowds of Mission District people. Four-legged friends can also wander about carefree off-leash while making friends with other members of the doggie community.
◆ Pine Lake Dog Park
Noteworthy for its place as a rest stop for hundreds of species of birds to fly to and from warmer climates, Pine Lake Park is also prized by city dogs and their owners for their nice hiking paths, picturesque lake suited for swimming, and an off-leash area on the park's west end that lets dogs run free.
◆ Buena Vista Dog Park
At 146 years young, Buena Vista Park is San Francisco’s oldest park. Dogs and owners with plus energy will love burning it on this park’s steep paths and winding staircases. Dog owners should have good control over their dogs, as it’s quite easy for dogs to get separated when going through Buena Vista’s many twists and turns.
21. Why do dog owners take their pets to Dolores Dog Park?
A. To let them socialize. lessons.
C. To help them lose weight. activities.
B. To give them rescue
D. To increase their physical
22. Which dog park is popular with bird lovers?
A. Corona Heights Dog Park.
C. Pine Lake Dog Park.
23. What is special about Buena Vista Dog Park?
B. Dolores Dog Park.
D. Buena Vista Dog Park.
A. It is suitable for swimming.
C. Dogs must be on a leash. B
When Gitanjali Rao shared how she likes “finding solutions
D. Dogs can go climbing. B. It is close to a museum.
to real problems”, it was hard to imagine this dynamic 11-year-old girl could settle a problem that has escaped scientists for years.
In just three months, Rao came up with a device（装置）that can replace the costly and lengthy tests currently used to reliably determine lead levels in our fresh water. Inspired by the current litigation （诉讼）in Flint, Michigan, a case of water pollution from 2020 to 2020, Rao designed a new testing system that resulted in her being named
America’s Top Young Scientist for 2020.
Rao had been following the water problem for about two years. She was amazed by the number of people affected by lead pollution in water and wanted to do something to change this. Gitanjali spent months trying to convince local high schools and colleges to give her lab time to continue her experiment. At home, Gitanjali worked on her project in the “science room” she asked her parents to create for her. Rao has created a device that uses three
parts: a cartridge, a Bluetooth reader and an app. To put it simply, the cartridge contains carbon nanotubes（纳米管） that react to
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