题目内容：

People from East Asia tend to have more difficulty than those from Europe in distinguishing facial expressions — and a new report published online in Current Biology explains why.

Rachael Jack, University of Glasgow researcher, said that rather than scan evenly(均匀的) across a face as Westerners do, Easterners fix their attention on the eyes.

"We show that Easterners and Westerners look at different face features to read facial expressions," Jack said. "Westerners look at the eyes and the mouth in equal measure, whereas Easterners favor the eyes and neglect (忽略) the mouth."

According to Jack and her colleagues, the discovery shows that human communication of emotion is more complex than previously believed. As a result, facial expressions that had been considered universally recognizable cannot be used to reliably convey emotion in cross-cultural situations.

The researchers studied cultural differences in the recognition of facial expressions by recording the eye movements of 13 Western Caucasian and 13 East Asian people while they observed pictures of expressive faces and put them into categories: happy, sad, surprised, fearful, disgusted, angry, or neutral. They compared how accurately participants read those facial expressions using their particular eye movement strategies.

It turned out that Easterners focused much greater attention on the eyes and made significantly more errors than did Westerners. "The cultural difference in eye movements that they show is probably a reflection of cultural difference in facial expressions," Jack said. "Our data suggests that whereas Westerners use the whole face to convey emotion, Easterners use the eyes more and mouth less."

In short, the data show that facial expressions are not universal signals of human emotion. From here on, examining how cultural factors have diversified these basic social skills will help our understanding of human emotion. Otherwise, when it comes to communicating emotions across cultures, Easterners and Westerners will find themselves lost in translation.

1.What were the people asked to do in the study?

A．To make a face at each other.

B．To get their faces impressive.

C．To classify (分类) some face pictures.

D．To observe the researchers' faces

2.What does the underlined word "they" in Paragraph 6 refer to?

A．The participants in the study.               B．The researchers of the study.

C．The errors made during the study.           D．The data collected from the study.

3.In comparison(比较) with Westerners, Easterners are likely to         .

A．do translation more successfully

B．study the mouth more frequently

C．examine the eyes more attentively

D．read facial expressions more correctly

4.What can be the best title for the passage?

A．The Eye as the Window to the Soul

B．Cultural Differences in Reading Emotions

C．Effective Methods to Develop Social Skills

D．How to Increase Cross-cultural Understanding