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Yellowstone Weather

Yellowstone National Park is at high altitude. Most of the park is above 7,500 feet (2,275 meters).
Yellowstone’s weather is unpredictable. In summer, it may be warm and sunny with temperatures in the high 70F. At night in any given month, the temperature may drop close to freezing. So it is best to come prepared for cold evenings and mornings, especially if you are camping or hiking. When you leave your campsite, please leave it prepared for possible thundershowers and wind.
A sunny warm day may become fiercely stormy with wind, rain, sleet and sometimes snow. Without enough clothing, an easy hike or boat trip can turn into a battle for survival.
Seasonal Weather Information
Spring
Cold and snow continue into May, although temperatures gradually climb Early in spring, daytime temperatures average in the 40F to 50F; by late May and June, they may reach the 60F and 70F. Nighttime lows fall below freezing.
S
A. do research work
B. take a business trip
C. have sports games
D. spend their holidays or take a tour

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Yellowstone National Park is at high altitude. Most of the park is above 7,500 feet (2,275 meters).
Yellowstone’s weather is unpredictable. In summer, it may be warm and sunny with temperatures in the high 70F. At night in any given month, the temperature may drop close to freezing. So it is best to come prepared for cold evenings and mornings, especially if you are camping or hiking. When you leave your campsite, please leave it prepared for possible thundershowers and wind.
A sunny warm day may become fiercely stormy with wind, rain, sleet and sometimes snow. Without enough clothing, an easy hike or boat trip can turn into a battle for survival.
Seasonal Weather Information
Spring
Cold and snow continue into May, although temperatures gradually climb Early in spring, daytime temperatures average in the 40F to 50F; by late May and June, they may reach the 60F and 70F. Nighttime lows fall below freezing.
S
A. Yellowstone’s weather is generally changeable and it snows most of the year.
B. It’s neither too hot in summer nor too cold in winter.
C. Weather in fall is pleasant and temperatures never fall below freezing.
D. It’s pretty warm in the day and very cool at night throughout the year.

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Welcome to Yellowstone National Park. Before we start our nature walk today, I’d like to give you a brief introduction to our National Park Service. The National Park Service began in the late 1800’ s. A small group of people found the land now called Yellowstone, and after hours of discussion around a campfire they decided that it should be enjoyed by everyone. Two years later the government declared it the first national park in the world.
After it became a national park, many other areas of beautiful scenery were set aside and in 1916 these parks began to be managed by the National Park Service.
I’m now employed by the National Park Service and I’m on duty at all time to answer questions and help visitors with any difficulty. Nature walk, guided tours, and campfire talks are offered by specially trained members. The Park Service also protects the animals and plants within the parks.

Who do you think the speaker is（　）.
A. A visitor to the park.
B. A clerk of the Park Service.
C. A guide from the touring party.

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The National Weather Service at Ryan Airport announced the following forecast Saturday night for Baton Rouge and the surroundings.
It will be partly cloudy through Monday with a chance of afternoon showers. High Sunday and Monday will be in the mid 8Os. Winds will be southeasterly 10 to 50 miles per hour becoming smaller at night.
Probability of rain will be 20 percent Sunday.
On the coast, winds will be southeasterly 10 to 50 knots (海里). Seas will run 2—4 feet. Winds and seas will be 3 feet higher near a few thunder showers.
High tide (潮水) at 1:00 p.m. , low tide at 12:24 a.m. Re- cord high for May was 93 posted in 1956 and record low was 51 recorded in 1954. Normally, temperature should change from 86 to 65 degrees.
There will be scattered (分散的) afternoon thunder-showers Thursday and over the west part of the state Thursday. Tuesday through Thursday, lows will be in the mid to upper 70s, with highs in the mid to upper 80s.
H
A. there will be no rain in the forecasted period
B. records will be broken
C. winds from the southwest will be becoming smaller at night
D. skies will be partly cloudy on Sunday and Monday

[单项选择]The National Weather Service at Ryan Airport brought out the following forecast (预报). Saturday night for Satonp Rouge and vicinity(附近地区).
It will be partly cloudy through Monday with a chance of afternoon showers. High Sunday and Monday will be in the mid 80s,with a low Sunday night in the upper 60s. Winds will be southeasterly 10 to 15 miles per hour diminishing at night.
Probability of rain will be 20 percent Sunday.
On the coast, winds will be southeasterly 10 to 15 knots(节、海里/小时). Seas will run 2-4 feet and will be 3 feet higher near a few thunder-showers. High tide will be at 1 p.m. ,Iow tide at 12:24 a. m..
Record high for May 22 was 93 posted in 1956 and record low was 51 recorded in 1954. Normally, temperatures should be from 86 to 65 degrees.
There will be afternoon thunder-showers Tuesday and over the west part of the state Thursday. Tuesday through Thursday, lows will be in the mid to upper 70s,with highs in the mid to upper 80s.
High Saturday w
A. Saturday morning paper
B. Sunday evening paper
C. Sunday morning paper
D. Monday morning paper

[单项选择]The National Weather Centre’s most recent customers are
A. supermarket retailers.
B. healthcare managers.
C. maritime and aviation workers.