In China, fire training at school is common to teach students to deal with emergencies (紧急情况). During the training, students hurry to the playground with a wet cloth covering their mouth. Fire training is held each term. |
In Japan, public elementary schools hold earthquake training once a month. They teach students how to escape during an earthquake without pushing. |
Most US school buildings have fire escapes on each floor. A fire escape has platforms (露台) with ladders (梯子). |
In many middle schools in the UK, students can choose to take a bicycle course. There, they learn how to ride to school safely. |
1.________ countries are mentioned in this passage.
A.Two | B.Three | C.Four | D.Five |
A.it is easy |
B.it could avoid most of these accidents |
C.it is interesting |
D.it is accepted by the teachers |
A.with a wet cloth covering their mouth |
B.by using ladders |
C.by bike |
D.by pushing each other |
A.once a week | B.once a month |
C.once a year | D.every day |
A.how to escape from earthquakes |
B.how to put out the fire |
C.some school safety rules in some countries |
D.a bicycle course |

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

