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A: Look! 1． this your grandpa?
B: Yes, 2． is. He enjoys farming.
A: Really? Is that his hobby?
B: Yes, 3． is. He enjoys 4． flowers and 5． vegetables. He 6． likes keeping animals.
A: 7． animals does he keep?
B: He keeps chickens and ducks. My grandpa enjoys fishing, 8．.
A: 9． he good at fishing?
B: No, Sometimes he goes fishing 10．the whole day but catches 11．.
Isn’t that funny? Ha, ha…
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
