病历摘要：患者女性，25岁。上腹部疼痛6小时，伴恶心，无呕吐，1小时前疼痛转移到右下

为了某种需要，现要绘制一幅代表某个国家7个省——G、I、J、L、P、S、V——的地图。G与除J之外的所有其他5个省相邻； I恰好与4个省——G、J、P、V相邻；J恰好与2个省——I和P相邻； L恰好与2个省——G和V相邻； P恰好与3个省——G、I、J相邻; S仅与G相邻； V恰好与三个省——G、I、L相邻。恰好要用6种颜色——金色、翡翠色、橄榄色、红色、银色、白色来表示这7个省，每种颜色至少使用一次，每个省在地图上仅用一种颜色，地图颜色的运用遵从以下条件：(1)相邻的省不能使用相同的颜色；(2)翡翠色和橄榄色不能相邻；(3)银色和白色不能相邻；(4)G的颜色是红色；(5)I用翡翠色。

下面哪一个省在地图上可以是橄榄色

A．G

B．J

C．P

D．S

In the United States, friendships can be close, constant, intense, generous, and real, yet fade away in a short time if circumstances (环境) change. Neither side feels hurt by this. Both may exchange Christmas greeting for a year or two, perhaps a few letters for a while --- then no more. If the same two people meet again by chance, even years later, they pick up the friendship where it left off and are delighted.

In the States, you can feel free to visit people’s homes, share their holidays, enjoy their children and their lives without fear that you are taking on a lasting obligation. Do not hesitate to accept hospitality because you cannot give it in return. No one will expect you to do so for they know you are far from home. Americans will enjoy welcoming you and be pleased if you accept their hospitality easily.

Once you arrive there, the welcome will be full and warm and real. Most visitors find themselves readily invited into many homes there. In some countries it is considered inhospitable to entertain at home, offering what is felt as “merely” home cooked food, not “doing something” for your guest. It is felt that restaurant entertaining shows more respect and welcome. Or for various other reasons, such as crowded space, language difficulties, or family custom, outsiders are not invited into homes.

In the United States, both methods are used, but it is often considered more friendly to invite a person to one’s home than to go to a public place, except in purely business relationships. So, if your host or hostess brings you home, do not feel that you are being shown inferior (差的) treatment.

Don’t feel neglected (被忽视) if you do not find flowers awaiting you in your hotel room either. Flowers are very expensive there, hotel delivery (递送，投递) is uncertain, arrival times are delayed, changed, or canceled – so flowers are not customarily (通常) sent as a welcoming touch. Please do not feel unwanted! Outward signs vary in different lands; the inward welcome is what matters, and this will be real.

小题1:In the United States, you will find friendships __________ if circumstances change.

A．die suddenly

B．pass away

C．disappear gradually

D．last forever小题2:Americans _________ their foreign friends to make a return for their hospitality.

A．ask

B．wish

C．never allow

D．don’t expect小题3:In some other countries, giving a dinner party at home is considered _______ than in a restaurant.

A．less formal

B．less hospitable

C．more natural

D．more popular小题4:According to the passage, which of the following is NOT true?

A．Flowers are available at all time.

B．Flowers are expensive.

C．Flowers are signs of outward welcome.

D．Flowers are not necessarily sent to guests.小题5:Which of the following is the best title for this passage?

A．American Hospitality

B．American Friendships

C．American Invitation

D．American Welcome

套丝机一般以（）进行工作，如有变速箱者，要根据套出螺纹的质量情况选择一定速度，不得逐级加速，以防“爆牙”或管端变形。

A、低速

B、高速

C、快速

D、变速

庄子