型钢水泥土搅拌墙中的水泥土搅拌桩对于周边环境条件要求较高，桩身在粉土、砂性土等透水性

人类胚胎干细胞研究和应用的伦理准则包括（）

A.尊重的准则

B.知情同意的准则

C.研究无禁区的准则

D.安全有效的准则

E.防止商品化的准则

In its everyday life, Italy is very much the man’s world. However, because of the Italian’s understanding of foreigners, the woman tourist is able to invade many of the male places that are prohibited to Italian women. These places include the cafè and the wine shop.

In the large cities the cafè is a combination of club and office. Here, for the price of a coffee, an Italian can read all the newspapers brought to him. And he can transact business, with the waiter producing pen, ink, and stamps as needed. Or if he wants, he can sit outside under a canvas covering before the door and enjoy the sight of beautiful women passing by.

The wine shop, as a rule, is a more vigorous place than the caf6, and is filled almost exclusively with men. Wandering singers, generally in groups of two or three, add to the noise of these places with their songs and music. Many of the songs are of a political character and make fun of the leading statesmen of Italy, America, England, France, and Russia. But the songs are generally showing off a spirit of mischief. And when the criticism is about America, the American tourists find themselves laughing as much as anyone else. The Italian is a master at making fun of you and making you like it.

The Italian men are deep-rooted gamblers. They have been brought up to it as children, but they are cautious gamblers and never go too much in it. The national lottery used to be one of the most popular forms of gambling. But later a football stake had taken away much of the interest in the lottery. But here the important thing is that gambling, the same as drinking, seldom goes to an Italian’s head and his bets are not really dangerous risks. Even at cards the Italian plays for low stakes, generally for a cup of coffee or wine.

In this world of the Italian male it would be careless if the romanticism of the Italian were neglected. The Italian might well be described as the world’s greatest romanticist. From any boat in Venice to any member of the government in Rome, the Italian is always aware of romance, of love and of the importance of being a good lover.

on the beaches of Italy, the visitor is aware that the Italian really live for romance. His manners, his compliments, his charm and his general way of behaving are those of a romanticist. Almost every Italian you meet is convinced that he is another Casanova.

Romance is as much a part of Italy as its art and its history. Perhaps the feeling of romance that wells up in you when you come to Italy is one of the greatest things that Italy has to offer a world that is tired of war and political intrigue. It is the ideal place for a honeymoon because hotel managers and waiters make you conscious of your own love and stress it in such a way that you feel more in love in this country than in any other.

Why did many Italians lose interest in lottery later？（）

A．Because they found lottery too risky.

B．Because they realized that buying lottery is a waste of money.

C．Because they thought playing cards is more interesting.

D．Because they found the football stake more attractive.

陈独秀指出：“对于与此新社会、新中国、新信仰不可相容之孔教，不可不有彻底之觉悟、猛痛之决心，否则不塞不流，不止不行。”这句话说明（     ）

①新文化运动把斗争目标直指孔教             ②儒家思想束缚了民主、科学的传播

③陈独秀认为儒家思想和民主政治完全对立     ④全盘否定儒家文化

A．②③④

B．①②③

C．①②④

D．①②③④

高压清洗机经空负荷运转正常的泵组，可以加压，加压方法为：踏板（），用扳手将溢流阀上螺栓（）拧紧，同时观察出口压力，调至合适压力。

布莱克分类窝洞考虑的充填材料是

A．复合体

B．银汞合金

C．复合树脂

D．磷酸锌粘固剂

E．玻璃离子粘固剂