在车辆繁忙的装、卸土场地时不准（）及（）。A、检查 B、维修 C、平稳 D、安全

下面说法：①直线AB与直线BA是同一条直线；②射线AB与射线BA 是同一条射；③线段AB与线段BA表示同一条线段；④直线、射线和线段上有无限多个点。 其中错误的是（     ）（填序号）。

People from East Asia tend to have more difficulties 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 scanning 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 suggest 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 under- standing of human emotion. Otherwise, when it comes to communicating emotions across cultures, Easterners and Westerners will find themselves lost in translation.

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

月经周期中控制排卵发生最重要的激素是（）

A.雌激素

B.孕激素

C.黄体生成素

D.卵泡刺激素

E.睾酮

据《招标投标法》，建设行政主管部门派出监督招标投标活动的人员可以（）。

A.参加开标会

B.作为评标委员

C.决定中标人

D.参加定标投票