Mrs. Chen took Lingling and Dongdong to a swimming pool for a swim. They changed into their swimwear. Lingling went into the pool and enjoyed the cool water.
Lingling:
Dongdong: No! I’m afraid of water.
Mrs. Chen:
Lingling: I’m also afraid of water before. But you see I’m not afraid now.
Dongdong: But I can’t swim.
Mrs. Chen: It doesn’t matter.
Lingling: Don’t be afraid, Dongdong.
Mrs. Chen: Use the steps to come into the pool, Dongdong.
Dongdong: OK… I’ll have a try.
Mrs. Chen: Hold my hands.
Dongdong:
Mrs. Chen: No thanks. You can’t learn to swim till you jump into the water.
A.Don’t worry. |
B.It’s not difficult. |
C.Thank you, Mrs. Chen. |
D.Hello, Dongdong. |
E.Come on, Dongdong! |
F.I’ll teach you how to swim. |

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

