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Many people like keeping dogs. Dogs are also like to be with people because people and dogs can be very good friends.
What does a Dog Look Like?
Some dogs are big and some are very small. They hear well with their ears. Their fur makes them warm. When dogs are happy, they wag their tails.
What are Puppies?
Puppies are also names for baby dogs. Mum dogs usually give birth to three, four or more puppies at one time. From birth, puppies drink milk from their mum for about four weeks.
What do Dogs Eat and Do?
Dogs should eat right food. Chocolate makes them ill. Dogs likes running. When you walk a dog in a park, you need a lead.
1．All the dogs are big.2．Dogs cannot eat chocolate.
3．Baby dogs are puppies.
4．Puppies eat “
” with their mums. 5．“Wag” means (意指) “
”. 
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
