遇顾客过后来找说少会给他一件商品，这种情况一般是顾客的责任，但营业员不要一口拒绝，也

Nearly everyone is shy in some ways. If shyness is making you uncomfortable, it may be time for a few lessons in self-confidence. You can build your confidence by following some suggestions from doctors and psychologists.

Make a decision not to hold back in conversations. What you have to say is just as important as what other people say. And don’t turn down party invitations just because of your shyness.

Prepare yourself for being with others in groups. Make a list of the good qualities you have. Then make a list of ideas, experiences, and skills you would like to share with other people. Think about what you would like to say in advance. Then say it.

If you start feeling self-conscious in a group, take a deep breath and focus your attention on other people. Remember, you are not alone. Other people are concerned about the impression they are making, too.

No one ever gets over being shy completely, but most people do learn to live with their shyness. Even entertainers admit that they often feel shy. They work at fighting their shy feelings so that they can face the cameras and the public. Just making the effort to control shyness can have many rewards. But perhaps the best reason to fight shyness is to give other people a chance to know more about you.

15．The main purpose of the article is to ________.

A. explain how shyness developed              

B. prove that shyness can overcome

C. persuade readers that shyness is natural   

D. recommend ways of dealing with shyness

16．Which of these can you conclude from reading the article?

A. The attempt to overcome shyness is always worthwhile.

B. Entertainers choose their work to fight shyness.

C. The attempt to overcome shyness is always successful.

D. Shy people never have any fen.

17．What is the source of the suggestions for fighting shyness?

A. The author of the article.                       B. Shy men and women.

C.Popular entertainers.                               D. doctors and psychologists.

18. Where would this article probably appear?

A. On the front page of a newspaper.           B. In a popular magazine.

C. In a science textbook.                                   D. In an encyclopedia(百科全书)。

    两个处于同一激发态的氢原子A和B，A自能级n₁跃迁到n₂能级辐射出光子a，B自n₁能级跃迁到n₃能级辐射出光子b，已知单色光a在水中的波长与单色光b在真空中的波长相等，则由此可知(        )

A  n₁n₂间的能级差大于n₁n₃间的能级差

B  若单色光a能使某金属发生光电效应，则单色光b也一定能。

C  a光子的粒子性强于b光子。

D 单色光a比单色光b更容易观察到光的衍射现象。

滤泡淋巴瘤病理特点是

A．满天星现象
B．R-S细胞
C．陷窝细胞
D．全身淋巴结无痛性肿大

体操是一个结合了杂技和舞蹈的体育运动。它的魅力，在于那种刀锋上的平衡与美感，在于每一秒都让人______。运动员在空中翻腾的时候，即使不在现场的观众，也会不由自主地屏住呼吸，直到运动员稳稳落地。
填入划横线部分最恰当的一项是______。

A．心旷神怡
B．赏心悦目
C．战战兢兢
D．如痴如醉

当防火间距不足时，可采取的措施有（）。

A.改变房屋全部结构的耐火性能，提高建筑物的耐火等级

B.调整生产厂房的部分工艺流程和库房所储存物品的数量

C.将建筑物的普通外墙改为防火墙

D.拆除部分耐火等级低、占地面积小、适用性不强且与新建建筑相邻的原有陈旧建筑物

E.设置独立的防火墙