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I have a good friend. His name is Li Ming. He is a good student. He is helpful at home. He can clean the bedroom, cook the meal, water the flowers and do the dishes. But he can't wash the clothes. His mother can wash the clothes. Li Ming has a sister. She is twelve. She can play chess. We often play together.
1．Li Ming is a good student. _______2．Li Ming is helpful at home. _______
3．Li Ming can wash the clothes. _______
4．Li Ming's mother can't wash the clothes. _______
5．Li Ming has a sister. She is eleven. _______
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
