Even if no RSVP has been requested, it’s ________ to thank your host for the invitation and let him know if you can be there or not.

听力原文：M: We need stationery for the seminar tomorrow, and the supplier hasn't delivered our order yet.

W: He's been quite unreliable lately. We'd better not deal with him anymore.

M: Yes, but what about tomorrow? Do you know someone who can help us out on such a short notice?

W: Melissa tells me her brother has a store nearby. I'll speak to her right away.

Why is the man concerned?

A．Invitations have not been sent out.

B．A delivery has not been received.

C．Many staff members have been fired.

D．A new deal may be rejected.

Professor Wilson has a speaking ______ for this weekend, so he declined the invitation by his friends for dinner.

A．employment

B．enhancement

C．engagement

D．assignment

Why did the author change his mind to accept the invitation to the White House?

A．He was eager to read his poetry to an audience of other poets and literary critics.

B．He wanted his writing and the writing of other Native American men and women to take on a more political tone.

C．He remembered the sacrifices that his ancestors had made for the privilege of going there, even if only to be ignored.

D．He realized that he had not been invited to the event as a representative of Native Americans.

听力原文： What happens when a merchant displays an item in his store window with a price tag on it? Must the merchant sell the item if the money is offered? It is a fact of law that a display of goods in a store window is not an offer to sell those goods, which can be accepted by a customer saying he will buy them. Instead, the display is known as an invitation by the merchant to receive offers from potential customers. The customer makes the offer to buy and the merchant may accept that offer. Then the goods are sold. But the merchant need not accept the offer, and without such acceptance, the customer cannot obtain the goods or sue the merchant for not letting him have them.

Unless the seller accepts the offer by taking cash from the customer, the seller is allowed to change his mind. The merchant may want to take back the goods because they have been displayed by mistake or had the wrong price written on them, and he or she would have the legal right to do this.

(30)

A．On the item.

B．In the store.

C．On the window.

D．On the stall.

PJ Party

22 Yew Street, Cambridge, Ontario

Tel: 416-223-8900

April 7th, 2009

Dear Valued Customer:

Our records show that you have been a customer of PJ Party Inc. since our grand opening last year. We would like to thank you for your business by inviting you to our preferred customer Spring Extravaganza this Saturday.

Saturday's sales event is by invitation only. All of our stock, including pajamas and bedding will be marked down from 50 — 80% off. Doors open at 9:00 a. m. sharp. Complimentary coffee and donuts will be served. Public admission will commence at noon.

In addition, please accept the enclosed $ 10 gift certificate to use with your purchase of $ 75 or more.

We look forward to seeing you at PJ's on Saturday. Please bring this invitation with you and present it at the door.

Sincerely,

Linda Lane

Linda Lane

Store Manager

pjpartyinc@shoponline. com

All sales are final. No exchanges.

Enclosure: Gift Certificate # 3451 (not redeemable for cash)

What is the purpose of the letter?

A．To invite the addressee to be its customer

B．To persuade the addressee to buy its products

C．To invite the addressee to its Spring Extravaganza this Saturday

D．To give the addressee some gift certificates