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The temperature is 37℃ today. Max and Mark want to go swimming. They have a big meal after school and they go to the swimming pool together. When they get to the pool, they see the safety rules on the wall.
| ●Don’t go swimming after eating too much. ●Please do some warm-up exercises before swimming. ●Please wear a swimming suit before getting into the pool. ●Don’t jump or dive into the pool. ●Take a shower before and after swimming. |
“Maybe we can only come again next time.” Max and Mark say.
1．It’s very hot today.2．Max and Mark have a big meal, so they can’t go to swim now.
3．You can wear your own (自己的) clothes to swim.
4．The Chinese meaning (意思) of “warm-up exercises” is“热身运动”.
5．You only need to take a shower after swimming.
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
