城市化包括物化的城市化和无形的城市化，下列选项中属于物化的城市化的是( )。A．城市

Americans usually eat three meals a day. Breakfast usually comes before eight o’clock in the morning. They usually have eggs, some meat, bread, fruit juice and coffee. Lunch is between twelve and one o’clock. It is like a light meal and working people must take lunch with them or get it near workplace.

Children in school take sandwiches, fruit, and cookies with them or eat in school. Supper, the main meal, is between six and eight in the evening. People cook it carefully. They may have meat or chicken, turkey and duck. They may all have potatoes or rice, vegetables or salad. The drink is coffee, tea or milk. Then comes the dessert.

根据短文内容选择最佳答案。

小题1:Americans have breakfast ________.

A．after eight o’clock

B．at eight o’clock

C．before eight o’clock in the morning

D．in the morning小题2: _______ is the most important meal in a day.

A．Breakfast

B．Lunch

C．Meals

D．Supper小题3: Americans usually have breakfast and supper at ______.

A．home

B．office

C．inn

D．work place小题4:When Americans have supper, _______ comes last.

A．drink

B．meat

C．dessert

D．vegetables

作为一篇文化随笔，《美文的沙漠》善于运用多种修辞手法，以下哪项不属于此（）

A.比喻

B.移觉

C.象征

D.拟人

粉末投入水中在水面旋转并呈黄色线状下沉而短时间内不扩散的药材为

A．红花

B．西红花

C．牛黄

D．麝香

E．熊胆

分布数据规划是比集中数据规划更为复杂的过程，一般其实现顺序应是( )。

A．传输方式、过程和位置、主题数据库、信息流通量估计

B．主题数据库、过程和位置、传输方式、信息流通量估计

C．过程和位置、传输方式、主题数据库、信息流通量估计

D．信息流通量估计、过程和位置、主题数据库、传输方式

键槽对称度超差的主要原因有（）

A.键槽中心未正确找正

B.工件安装轴线与进给方向不平行

C.工件装夹不牢固

D.采用V形架装夹工件

E.采用自定心虎钳装夹工件