Bob is a healthy boy. He eats a lot of vegetables and fruits every day. He also likes sports very much. His favorite sport is tennis. He plays tennis three times a week. He can play ping-pong very well, too. He plays it with his friends twice a week. Bob is also very helpful at home. He goes shopping with his mother once a week. And he helps his mother do the dishes after dinner. Then he often takes a walk with her. Bob eats well, sleeps well and studies well. His parents love him very much.
1.Bob is healthy, and he eats a lot of vegetables and fruits. (_______)2.His favorite sport is tennis. (_______)
3.He plays ping-pong three times a week. (_______)
4.He goes shopping with his mother twice a week. (_______)
5.After dinner, Bob often takes a walk with his mother. (_______)
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