搜索
Alice, Su Nan, Colin and Liu Zhaoyang are at table. They are having dinner together this evening.
Liu Zhaoyang and Su Nan are from China. They want to cut some beef, but they don't know how to use the knife and fork. Later, Colin tells them to use the forks with their left hands and use the knives with their right hands. They try to learn and then they can use the knives and forks very well.
Alice is from the USA. She likes dumplings best, but she can't use the chopsticks well. So Liu Zhaoyang teaches her to use the chopsticks with her right hand. But it's sti11(仍然) difficult (困难) for her to use them.
1．The four children have dinner together this evening.2．Liu Zhaoyang can use the knife and fork very well at last.
3．Su Nan can't use the knife and fork at last.
4．Alice can use the chopsticks well at last.
5．Alice likes dumplings best.
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
