5.If sites made it easier to shop and buy, sites' actual income would ______.

A. be the same B. decrease a lot

C. increase a little D. increase a lot

6.The e-commerce industry is losing much money in potential sales BECause ______.

A. people are not familiar with many sites

B. about half of the buying attempts fail

C. many people don't have the access to the Internet

D. there is too much competition from traditional business

7.e-commerce sites can earn more money from the holiday season by _______.

A. improving the customer experience

B. forming valid identification

C. advertising widely

D. providing more content

8.Problems with ______ were the chief cause of failed buying attempts.

A. electronic signature B. the checkin process

C. the checkout process D. registration

9.What attitude does the author hold when describing the sites' loss of revenue?

A. Emotional B. Objective

C. Critical D. Pessimistic

10.Which of the following techniques is most used in the text?

A. Exemplification B. Definition

C. Comparison D. Contrast