题目内容：

    Getting stuck with gifts we do not want is no small problem. In a survey across 14 countries in Europe，meanwhile，one in seven said they were unhappy with what they received for Christmas, yet more than half simply kept the gifts.

Why can't more gifts be passed along to people who appreciate them？People in a study published in the Journal of Consumer Behaviour，for instance，used such words as guilty，lazy，thoughtless and disrespectful in describing their feelings about regifting. Popular culture casts it as taboo(禁忌)，as well.

However，our research with Francis J. Flynn，a professor of organizational behavior at Stanford University's Graduate School of Business，suggests the shame associated with regifting is largely unwarranted. Indeed, our research consistently tells us that people overestimate the negative consequences.

We asked people to imagine themselves as a "giver," who gives someone a gift card and later learned it had been regifted. The general attitude of the original givers was: "It's your gift, do what you want with it." Next, we asked givers to compare regifting a supposed wristwatch with throwing it in the trash. For the original givers, regifting the watch was a much less offensive act than trashing it.

Finally, we invited to our lab at Stanford people who had recently received presents, and divided the people into two groups. When we gave the first group an opportunity to regift that present, 9% did so. When we gave the second group the same opportunity, we added that it was ""National Regifting Day". It wasn't really National Regifting Day, but the group didn't know that: 30% of them agreed to regift.

Everyone has received unwanted gifts in their lives, and generally we will receive more in the future. Our research offers a simple solution to that problem. This holiday season, consider regifting, and encourage receivers of your gifts to do the same if what you gave them isn’t quite what they hoped for.

1.Why does the author mention the study in Journal of Consumer Behaviour?

A.To highlight the importance of regifting.

B.To show people's attitudes to regifting.

C.To challenge the rightness of regifting

D.To express his concern for regifting

2.What is the meaning of the underlined word unwarranted?

A.Unnecessary. B.Uncertain.

C.Unimportant. D.Unconscious.

3.What do we know about the research?

A.9% simply kept unwanted gifts.

B.30% didn’t know National Regifting Day.

C.Givers generally didn't mind regifting.

D.Receivers tended to trash unwanted gifts.

4.What's the author's attitude towards regifting?

A.Negative B.Neutral

C.Critical D.Approving