1. Trinh’s pen is red. ………… is black.
A. I B. My C. Mine D. Mine pen
2. They arrived ………… a car at 8 a.m. this morning.
A. in B. on C. by D. with
3. One day in the future, human ………… to Mars
A. will travel B. will be travelling C. is travelling D. travelled
4. We just wear ………… on our back and we can fly.
A. a metro B. a skytrain C. a jetpack D. a teleporter
5. ………… has one wheel and is very easy to fall.
A. Hover scooter B. Monowheel C. Bicycle D. Driverless car
6. They ………… the boat out into the middle of the river.
A. pedaled B. functioned C. sailed D. drove
7. People can ………… on the Dead Sea because the water there is very salty.
A. flop B. float C. crash D. cycle
8. This morning I couldn’t go to work in time because of the ………… roads
A. heavy B. crowd C. gridlocked D. traffic jam
9. My friend has a 3-year-old brother. The boy in this picture is ………… younger brother.
A. her B. hers C. she D. the
10. Next year, we ………… and soon get jobs.
A. will graduate B. will be graduated C. will be graduating D. won’t be graduated
Organic Transit Elf is a three-wheeled vehicle. It travels at 32 kph. It runs by solar energy or pedaling. The vehicle can protect people from the sun, rain and other elements. However, it depends a lot on the weather. It costs about $5,000. I think it's too expensive.
The Ryno is a one-wheeled electric motorcycle. Just shift your body weight forward to go forward or lean back to stop or slow down. There's also a hand brake. You can ride it anywhere and with just a little bit of practice, nearly anybody can ride it. In my opinion, it's a convenient, environment-friendly vehicle.
Hovertrax is the world's first portable, double-wheeled, self-balancing electric scooter. It's controlled by shifting the body weight. Stand on the foot platform and lean forward to move forward. Lean back to stop or move backward. Shift more weight to one foot to turn. One problem is that it can be only used on a smooth surface. Personally, I think when using it, there is risk of injury, especially for children.