B. Tool use among crows is gained by learning.

　　C. Human parenting should be tested on other animals.

　　D. Crows' ability to use tools can be improved by learning.

　C

Katie Blomquist, a 1st grade teacher at Pepperhill Elementary School in North Charleston, South Carolina, learned last year that one of her students wanted a bike for his birthday. But his parents could not afford it. So, like most other people that you will find here on InspireMyKids, she decided to do something about it!

First, she thought about how to get a bike for that child. Then, she decided to think bigger. How could she also give a bike to his brother? Or how about a bike to every child in her class? Finally, her vision got even bolder! How might she find a bike for the 650 kids that make up her entire school? Many children at Pepperhill live in poverty and even though Ms. Blomquist could not afford to buy the bikes herself, she felt she now had to do something about it!

So, she decided to start a GoFundMe campaign to raise money. Her request caught on! In less than 6 months, over 1,000 donors from around her community, and even 10 countries around the world, provided over $80,000 in donations! This was enough to buy more than 600 bikes for Pepperhill students, along with helmets and locks!

After a big ceremony to surprise the kids, Ms. Blomquist is not done. Katie Blomquist is starting a charity called "Going Places," with a mission(使命) "to bring joy to deserving children from low income families by providing them with bikes, swim lessons, summer camp opportunities, and more. This will enrich their growth and fuel their imaginations, supporting the most basic childhood right - a right to joy."

28. What led Ms. Blomquist to start GoFundMe campaign originally?

A. Her dream for a bike. B. A kid's birthday wish.

C. Her bad family conditions. D. A moving story on ImspireMyKids.

29. What is Pepperhill Elementary School like?

　　A. Its education level is well below average.

　　B. It has no access to convenient transportation.

　　C. It's a community school intended for the poor.

　　D. Its students all come from a poor background.

30. What do the figures in Paragraph 3 indicate?

　　A. The large number of kind donators.

　　B. The great advantage of GoFundMe.

　　C. The immediate success of GoFundMe.

　　D. The huge economic benefits of GoFundMe.

31. Which words can best describe Katie Blomquist?

　　A. Sympathetic and devoted. B. Aggressive and independent.

　　C. Generous and honest. D. Responsible and sociable.

Have you ever seen a car without a driver? It sounds crazy, but these computer-driven driverless cars will soon be filling roads near you. Companies have been designing and testing these cars.

So how do they work? The cars have sensors which can detect other cars and objects on the road. Sensors on the wheels also help when parking, so the car knows how far it is from the edge of the road or other parked cars. Road signs are read by cameras, and satellite navigation systems are used, so the car knows how to get to your destination. All you have to do is type in the address! Finally, a central computer system takes in all the information it receives from the sensors and cameras and