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Mr Chen is a farmer. He’s got a big farm. There are many animals on the farm.There are twenty pigs. They’re very fat. There are ten horses. They’re tall and strong.There are eighteen sheep. Twelve are white and six are black. There are also two dogs. One is brown and the other is black. They’re very clever.
1．Mr Chen’s farm is big.2．There are 20 pigs on Mr Chen’s farm.
3．The horses on Mr Chen’s farm are short.
4．There are 12 black sheep on Mr Chen’s farm.
5．The dogs on Mr Chen’s farm are very clever.
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
