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“Mum says that we should not swim in that deep pool!” said Jim.
“Oh, don’t be such a baby,” said Ray with a laughter. On this hot June afternoon, the water was so cool and comfortable that the boys couldn’t wait to jump into the pool for a quick swim.
“Come on, Julian!” shouted Ray. “Let’s compete!”
Shaking his head in disapproval (不赞成), Jim walked to the nearby food corner to have a bite. Ray swam ahead like a fish. Julian had just begun his swimming lessons last week.
“Help!” cried Julian. “It hurts!”
“Oh dear! What should I do?” shouted the scared Jim.
Luckily, there was a lifeguard on duty who heard the cries for help.
The three brothers went home and Jim reported the matter to their mother. Their mother scolded (训斥) Ray and Julian strictly and the boys promised not to do it again. Jim was glad that he was spared the scolding.
| A．He tried to catch up but he knew he could never win Ray. |
| B．Jim swam back quickly to save him. |
| C．He jumped into the pool and pulled Julian out at once. |
| D．Julian and Ray jumped into the pool and swam happily. |
| E．Ray was too far away to hear his cry for help. |
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
