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Useful Information about Beijing

Climate and Clothing
August is late-summer in Beijing, with an average temperature of 26.6 degrees Celsius. Light clothes and a suit for formal occasions would be appropriate.
Currency and Exchange
Major credit cards like Mastercard, American Express and Visa are accepted in most big shopping centers and hotels. Major currencies can be changed into Chinese yuan (RMB) at the airport, hotels or the Bank of China at a rate of about US$1.00 to RMB8.00.
Time Difference
China Time is 8 hours ahead of GMT.
Electricity
The local voltage is 200-240 volts AC.
Telecommunications
Modern telecommunication facilities such as International Direct Dial, Internet access and fax are available in the hotels.
Tipping(小费)
Tipping is not expected by service attendants in China, except for some tour guides, hotel porters and housemaids.

Usef

[单项选择] Changes in regional climate brought about by large-scale deforestation in the eastern lowlands of Central America are affecting weather downwind in the mountains, imperiling ecosystems there. The so-called cloud forests of Monteverde lie along the crest of Costa Rica’’s Cordillera de Tilaran mountains. These habitats rely on the almost perpetual fog that forms as moisture-laden Caribbean winds rise up the eastern slopes of the mountains and pass through altitudes at which clouds condense, says Robert O. Lawton, an ecologist at the University of Alabama in Huntsville. The humidity in those breezes is enhanced by moisture expelled from the leaves of lowland forests. By the early 1990s, more than a century of deforestation had left only 18% of the Costa Rican lowland forests east of the peaks untouched. The pastures that replaced forests don’’t humidify the winds as well as forests do and are better at warming the atmosphere. As a result, the winds off these pastures must ri
A. large-scale deforestation and the climate changes
B. ecosystems in the eastern lowlands
C. the cloud forests of Monterverde
D. Caribbean winds