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Dick：Hello，Jack. Look at this picture.
Jack：Wow! Who are they?
Dick：They are my new friends in China. The little girl is Nancy. She is riding a bike.
Jack：What is that boy doing?
Dick：Oh! He is playing with yo-yo.
Jack：What is yo-yo?
Dick：It’s a kind of ball.
Jack：Who is the man over there?
Dick：He is my math teacher.He is talking to his friends.
(1)Jack is Dick’s new friend in china.
(2)Nancy is riding a bike.
(3)The boy is playing with a kind of ball.
(4)Dick’s Chinese teacher is talking to his friends.
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
