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3.In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation.

• A、useless
• B、endless
• C、unless
• D、hopeless

60.

Which of the following can turn customers’ attention into real interest?

• A、Listing the product's main features.

• B、Describing the benefits of a product

• C、Selling a product at a great discount.

• D、Offering free samples through a link