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| A．This is Tower Bridge. |
| B．London is a big city. |
| C．It's Big Ben. |
| D．It is Hyde Park. |
| E．It's Buckingham Palace. |
Tom: What's this?
Jim: It's a book about London.
Tom: 1.________
Jim: Yes! Very big.
Tom: What's this?
Jim： 2.________ It's the Queen's house. It's very beautiful.
Tom: Look at the clock. What's this?
Jim: 3.________ It's very old.
Tom: This park is beautiful. What is it?
Jim: 4.________
Tom: Look! 5.________ It's very famous.
Jim: Yes. It's very beautiful, too.
Tom: London is a beautiful city.
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
