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Can you play the piano? How many times can you hit the keys (敲击琴键) in one minute? Hungarian musician (匈牙利音乐家) Balzs Havasi can hit the piano keys 490 times a minute. Havasi began to learn the piano when he was four years old. He practiced playing the piano eight to ten hours a day. In November 2009, Havasi broke a Guinness world record (吉尼斯世界纪录) and became the “Fastest piano player in the world.”
In 2010 Havasi gave a wonderful performance (表演) at the Shanghai World Expo.
1．Where is Havasi from? ( )| A．Canada. | B．America. | C．Hungary. |
—He’s _________.
| A．a football player | B．a dancer | C．a musician |
| A．3 | B．4 | C．5 |
—There are _________.
| A．2009 | B．2010 | C．490 |
—In _________.
| A．Shanghai | B．Guangzhou | C．Shenyang |
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
