“Welcome to Senior High School．”（歡迎進(jìn)入高中），在這段句子的所有英文字母中，字母O出現(xiàn)的頻率是    ．
【答案】分析：數(shù)出這個(gè)句子中所有字母的個(gè)數(shù)和字母“o”出現(xiàn)的頻數(shù)，由頻率=頻數(shù)÷總個(gè)數(shù)計(jì)算．
解答：解：在“Welcomc to Senior High School．”這個(gè)句子中：有25個(gè)字母，其中有5個(gè)“o”，故字母“o”出現(xiàn)的頻率為 5÷25=0.2．
故答案為：0.2．
點(diǎn)評(píng)：本題考查頻率、頻數(shù)的關(guān)系：頻率=．
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Welcome to Chatsworth
Opening Time
House 11:00 a.m. Last admission (允許進(jìn)入) 4:30, closes 5:30 p.m. Last entry to Scots Rooms, when open, is 4:00 p.m.
Garden 11:00 a.m. Last admission 5:00, closes 6:00 p.m.
June, July and August Garden opens at 10:30 a.m.
Admission
Adults ………………………………………………………………………£ 6.50
Senior citizens & students ………………………………………………… £ 5.25
Children …………………………………………………………………… £ 3.00
Childrenunderthree …………………………………………………………Free
Family Ticket …………………………………………………………… …£ 16.75
Car Park …………………………………………………………………… £ 1.00
Shopping
Two gift shops, with many times based on designs from the House and Garden.
Christmas shopping available at weekends from November to Christmas
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Restaurant serving home made food. Bar serving drinks and cakes.
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Angling Fair weekend
8th and 9th May. One of the only fairs in the Country for game and sea fishing funs.
Flower and garden Show Weekend
26th and 27th June. The second year of this event, with flower shows and sales and gardening advice.
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