Dear Mr. Bloggs,
Our records show that you have an outstanding balance dating back to October, 2009. Your October Involce was for ￡2, 820, 00 and we have yet to receive this payment. Please find a copy of the Involce enclosed.
If this amount has already been paid, please disregard this notice. Otherwise, please forward us this amount owed in full by December 1st, 2009. As our contract Indicates, we begin charging 5% interest for any outstanding balance after 30 days.
Thank you in advance for your cooperation. We hope to continue doing business with you in the future.
Sincerely,
Maria McPhee
Accountant
of Jane Smith Design Ltd.
Enclosure: Involce#23
JANE SMITH DESIGN Ltd
24 Durham Street - London W1F 8XH Tel: 020-7123 1234 Fax: 020-7123 1235
INVOICE
Invoice to:
BBC
For the attention of Joy Bloggs
Production Accountant
"New Horizons"
BBC Television Centre
Wood Lane, London W12 7RJ
Tel: 020 8743 6789
Invoice Date:
27/10/09
Invoice No: 23
Customer Order No: 450003456 
Registered office address: 1 Piltdown Green, London NW1 5DF
VAT Registration No: 123456789
What is the main purpose of the letter？
A．Requiring for paying a bill
B．Confirming of over-chargement
C．Complaining about outstanding balance
D．Discovering an invoice
How many percent of the people would be in favor of a shorter coffee-break and finishing earlier？
A．25%
B．30%
C．50%
D．55%
What is the award given by the people who have good suggestions？
A．To have a month holiday
B．To have an extra month's pay
C．To get a higher position in the company
D．To get another two months' pay
Why does the professor say this:
A．He is showing the students some slides.
B．He does not want the students to ask questions.
C．He wants the students to pay attention.
D．He thinks that the information is very clear.
Which sentence below best expresses the essential information in the highlighted sentence in paragraph 5？ Incorrect choices change the meaning in important ways or leave out essential information.
A．Fire has destroyed much of the original vegetation, so mudflows are now more likely.
B．More damage to vegetation is caused by brush fires than by any other natural event.
C．It is necessary to remove dead and damaged vegetation after a mudflow but not after a fire.
D．Fires occur frequently in areas where the vegetation has been cleared for development.
Why does a rock avalanche move faster than other types of rockslides？
A．The rock moves over a layer of compressed air.
B．The rainfall is heavy where avalanches occur.
C．The rock breaks apart as it moves downslope.
D．The angle of the slope is almost vertical.