All the students wait for their hobby shows in the class, except(除了)Bob, a lazy(懒惰的)boy in the class. No one thinks Bob has a hobby. But Bob takes many beautiful stamps and he doesn’t show them to his classmates. Ms White is very happy after watching them and says, “Bob, is collecting stamps your hobby?” “ Yes.” Bob says. Ms White asks, “Wow. Sounds great. I like this stamp. Can you tell me where it is from?” Bob can’t answer the question. He looks at her and answers, “I’m sorry I can’t. They are my brother’s. His hobby is collecting stamps.” “Bob, you should show your hobby,” White says. “I think I have a hobby. It is watching my brother collecting stamps.” Bob says happily.
1.Bob likes collecting stamps. (______)2.Bob takes many stamps and he shows them to his classmates. (______)
3.No one thinks Bob has a hobby. (______)
4.Bob’s brother likes collecting stamps. (______)
5.Bob knows everything about each stamp. (______)

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

