Imagine you are in a new city. You ask someone how to get to a bookstore. They tell you to go straight, turn left, and you will find it on your left. In fact, you can also find your way with a phone. Now imagine you are in an outdoor game. You only have a map and a compass, and instead of running down a city road, you may need to run around in the woods, climb over rocks and go up and down hills. Welcome to orienteering! In the game of orienteering, players use a map and a compass to find stations. These stations are called controls. A special flag, usually in bright colours, marks each control. Controls are not easy to find. They may be in front of a big rock or behind a tree. In most of the games, you’ll have to find controls in numbered order, but in some games you can change the order. At each control, players mark a card they carry with them and the card will be marked in different ways ( See Figure 1 ). The cards are very important because players must find all the controls to win. If someone misses a control, they won’t have that mark on their cards. They might cross the finish line first, but the next person to finish with a full card will win the game.
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A.A map, a compass and a flag. | B.A flag, a compass and a card. |
C.A compass, a map and a card. | D.A phone, a compass and a map. |
A.You don’t need to mark the cards. |
B.You can’t miss any of the controls to win. |
C.You have to find controls in numbered order. |
D.You must be the first to pass the finish line to win. |
A.9. | B.10. | C.11. | D.12. |

同类型试题

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2


y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

