无子西瓜的培育是______________________________。

材料一 唐前期（618—756）所兴修的163项水利建设中，北方五道就有101项，占全数2/3，……其中河北河南二道就有74项，占全部北方水利建设项目2/3强。唐后期（757—907年唐亡）101项水利工程中，南方五道就有76项。其中以江南道为最多，竞占49项。与此同时，北方诸道的水利建设数字，骤然下降，河南道由前期的20项下降为7项。

——据邹逸麟《从唐代水利建设看与当时社会经济有关的两个问题》

材料二 田纳西河流域在综合开发前是美国最贫穷的地区之一，多数居民没有电用，年均收入仅为全国平均值的45%。1933年5月美国国会成立了公共工程署等机构，管理公共工程项目，其中最宏伟的工程是田纳西流域的水利工程。1933年成主的田蚋西流域工程管理局，利用美国政府提供的投资，招募失业工人，兴建水坝、水电站，发展航运，结果建成了大型的水电站和完整的航运系统，促进了这一地区工业和农业的发展。包括7个州的广大地区受益，平均收入在工程发挥效益手增长4倍，美国制造第一颗原子弹所耗的电力也是靠田纳西工程提供的。

——摘自吴予廪、齐世荣主编《世界史》

（1）据材料一，概括唐朝水利建设的特点。（4分）结合所学知识，分析形成这些特点的社会原因。（4分）

（2）结合所学知识，指出田纳西河流域开发的历史背景。（2分）根据材料二，概括指出田纳西水利工程兴建所产生的影响。（6分） 

（3）结合所学知识，谈谈你对水利建设的认识。（4分）

王某向保险公司投保了300万元的死亡保险，受益人是王的父母。但王怕其妻知道，没有将此事告知其父母。1999年2月，王某出差坐飞机因飞机坠落而死亡，家人痛不欲生。在清理王的遗物时，大家都没发现王的保单。2001年3月，王妻在搬家时发现了该保单，并将其交给了王的父母。对此下列说法正确的是：

A．王的父母对保险公司请求给付保险金的权利因在知道保险事故发生之日起2年内没有行使而消灭

B．王的父母请求给付保险金的权利没有超过期限，因该期限为王的父母知道保单的存在之日起2年内

C．王的父母请求给付保险金的权利没有超过期限，因该期限为王的父母知道保险事故发生之日起5年内

D．王的父母可以将保单送给王妻，由王妻以受益人的身份向保险公司请求赔偿

口腔颌面外科手术止血方法中，最基本、最常用的方法是（）。

A.降压止血

B.阻断止血

C.压迫止血

D.热凝止血

E.钳夹、结扎止血

“Dining out”, or “eating out”, is a phrase people use in Britain when they eat in a restaurant or a pub. Eating out is more popular in Britain today than ever before.

However, eating out can be expensive. Restaurants are normally more expensive than pubs, though many pubs serve very good, simple food. As British people don’t dine out every night of the week, eating in a restaurant is often seen as a special occasion. When going for the first date, or if celebrating an anniversary or a birthday, many people like to go to a restaurant. People often eat in a restaurant before going to the cinema or the theatre.

As in all cultures, there are many rules of etiquette (礼节)surrounding food and eating, and nowhere is this more pronounced than when eating in a smart restaurant. People are almost always expected to eat with a knife and fork and these should be held in the correct hand and used in the correct way. It is also impolite to have your elbows on the dining table when you are eating.

There’re many such “unspoken” rules — they are normally only important when eating in a very elegant and expensive restaurant, and vary slightly from restaurant to restaurant and place to place. A recent nationwide survey showed that there was a divide in manners between the north and south of Britain — the “worst” manners were in Scotland and the northeast, and the “best” in Wales and the southeast! However, this survey was almost certainly conducted by someone in the southeast, so it may not be entirely fair.

Naturally, restaurants vary greatly in quality and price. However, almost all British cities have a vast range of food and cooking styles to choose from as well as traditional British food,. from the very cheap to the very expensive — French, Italian, Indian, Greek, Thai, Japanese and many more. In fact, when asked what their favorite food is, many British people say an Indian curry (咖喱菜）rather than any other dish!

As well as dining in a restaurant, when people are too tired to cook after work they often get a “takeaway”. This means they order from a takeaway or takeout restaurant by phone, then go to collect it and take it home to eat. Many takeout restaurants also deliver to your house. While you can normally find a takeout restaurant for almost any cuisine, the most popular are Italian, Indian and Chinese — and all you have to do is to open the door, pay and eat!

小题1:What can be concluded from the first two paragraphs?

A．The British spend more eating out than cooking at home.

B．The British pay great attention to eating in a restaurant.

C．The British often dine out when celebrating festivals.

D．People tend to eat in a restaurant after watching a movie.小题2:The underlined word ^“pronounced” in Paragraph 3 probably means “_____”.

A．polite

B．expensive

C．strange

D．obvious小题3:According to the passage, which of the following statements is true?

A．There exist great differences of rules in different restaurants.

B．People from Wales and southeast Britain are the most polite.

C．Your order in a takeout restaurant can be sent to your home.

D．Traditional British food is seldom served in British restaurants.小题4:What does the passage mainly talk about?

A．Restaurant culture in Britain.

B．Table manners in Britain.

C．Different restaurants in Britain.

D．Traditional and foreign foods in Britain.

433-Ⅰ使用的催化剂为（）。