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[2022·¼ÃÄÏÍâ¹úÓïÄ£Äâ]Joseph Francis Charles Rock (1884£­1962) was an Austrian­American explorer, botanist, and anthropologist (ÈËÀàѧ¼Ò). For more than 25 years, he travelled extensively through Tibet and Yunnan, Gansu, and Sichuan provinces in China before finally leaving in 1949.

In 1924, Harvard sent Joseph Francis Rock on a treasure hunt through China's southwestern provinces—the  Wild West of their day. But gold and silver weren't his task: Rock, a distinguished botanist, sought only to fill his bags with all the seeds, saplings, and shrubs he could find. During his three­year expedition, he collected 20£¬000 specimens for the Arnold Arboretum (°¢ÅµµÂÖ²ÎïÔ°).

Botany, though, was just one of Rock's strengths. As an ethnologist (Ãñ×åѧÕß), he took hundreds of photographs of the Naxi, a tribe in Yunnan Province, recording their now­lost way of life for both Harvard and National Geographic, and  took notes for an eventual 500­page dictionary of their language. His hand­drawn map of his travels through China's “Cho­Ni” territory, in the Harvard Map Collection, includes  more than a thousand rivers, towns, and mountains indicated in both English and Chinese, and was so well made that the U£®S. government used it to plan aerial missions in World War ¢ò.

Scientist, linguist, cartographer, photographer, writer—Rock was not a wallflower in any sense. Arrogant and self­possessed, he would walk into a village or warlord's place “as if he owned the place£¬” said Lisa Pearson, the Arboretum's  head librarian.

In declaring his successful return under the headline “Seeking Strange Flowers, in the Far Reaches of the World”£¬ the Boston Evening transcript ran a large photo   of the daring explorer wearing in a woolly coat and fox­skin hat.  “In discussing his heroism including hair­raising escapes from death either from mountain slides, snow slides and robber armies£¬he waves the idea away as if it is of no importance.”

The Arboretum and Rock parted ways after 1927, mainly because his trip cost Harvard a fortune—about $ 900£¬000 in today's dollars. Fortunately, many of his specimens, many of his amazing photos, and his great stories remain.

1£®What is the passage mainly about?

A£®Rock's service for the U£®S government.

B£®Rock's cooperation with Harvard.

C£®Rock's work as a botanist.

D£®Rock's exploration in Southwest China.

2£®What contribution did Rock make to the USA besides collecting new plants and specimens?

A£®He travelled through some uncivilized places in China.

B£®His hand­drawn map was used in WW ¢ò.

C£®He showed heroism by escaping difficulties.

D£®He made headlines in Boston Evening News.

3£®How did Rock respond when people mentioned his heroic deeds?

A£®Excitedly.    B£®Proudly.

C£®Calmly.      D£®Nervously.

4£®What caused Rock to stop work for The Arboretum?

A£®The vast expense.

B£®The dangerous journey.

C£®The challenging tasks.

D£®The unknown world.