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1．The material above is mainly about .
| A．The New YorkTimes | B．“36 Hours” guides |
| C．an introduction to “Explorer” | D．prices of the new books |
| A．2 | B．4 | C．6 | D．8 |
| A．the name of a writer | B．the sign of dream trips |
| C．a store that sells books online | D．a company that produces books |
| A．They are very expensive. |
| B．They are well designed and made. |
| C．They are sold by a team of writers. |
| D．One of them is about ‘Beaches’, ‘Islands’and ‘Deserts’. |
| A．journeys | B．readers | C．lifestyles | D．advertisements |
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
