问题 单项选择题

在VFP 6.0数据表中,用于存放图像、声音等多媒体对象的数据类型是______。

A.备注型

B.通用型

C.逻辑型

D.字符型

答案

参考答案:B

解析:
在Visual FoxPro中,字段变量的数据类型有多种,表7-1给出了在Visual FoxPro中所有的字段变量的数据类型。

表7-1 字段变量的数据类型说明
类型说明宽度
Character(字符型,简记为C)从键盘输入的可显示的汉字或字符一个字符占用一字节
Numerical(数值型,简记为N)存放可运算的数值数据最多20位
Date(日期型,简记为D)存放年月日的日期值8字节
DateTime(日期时间型,简记为T)存放年月日和时分秒的时间数据8字节
Logical(逻辑型,简记为L)“真”或“假”的逻辑型数据1字节
Currency(货币型,简记为Y)货币值,保留4位小数8字节
Double(双精度型,简记为B)存放精度要求较高的数据8字节
Float(浮点型,简记为F)与数值型相同1~20字节
Integer(整型,简记为I)存放整数4字节
Memo(备注型,简记为M)存储文本,保存在与表同名的备注文件中4字节
Genaeral(通用型,简记为G)存储图形或声音等多媒体数据,数据也是存储在备注文件中4字节

阅读理解

The food guide pyramid(金字塔)was the model for healthy eating in the United States. Now it has been replaced(代替)by a colorful plate—called MyPlate—with some of the same messages: Eat different kinds of foods, and eat less of some foods and more of others.

The pyramid has six parts to show the five food groups and fats, oils and sweets. Basic(基本的)foods are at the bottom(底部)and include bread and rice. In two middle parts are vegetables and fruits. In two top parts are milk and cheese, and meat, fish, eggs and so on.

The plate has four parts: vegetables, fruits, grains, and protein, and a side order of dairy(乳制品)in blue. The big message is that fruits and vegetables take up half the plate and the vegetable part is a little bigger than the fruit part. The grain part is bigger than the protein part. The MyPlate seems to be encouraging us to eat different food groups at each meal.

First Lady, Michelle Obama, has introduced the plate. And she will use it with her family. She said the pyramid just wasn’t easy enough for parents and kids to follow.

小题1: MyPlate is for_______.

A.weight training

B.healthy eating

C.protecting animals

D.sleeping well小题2:Which are in the highest part of the pyramid?

A.Meat, fish and eggs.

B.Vegetables and fruits.

C.Bread and rice.

D.Fats, oils and sweets.小题3:According to the passage, which is TRUE?

a. vegetables b. fruits c. grains d. protein e. dairy

A.

B.

C.

D.小题4:The following words can describe the plate EXCEPT_______.

A.colorful

B.wasteful

C.simple

D.useful小题5:We can infer from the last paragraph that_______.

A.First Lady, Michelle Obama, likes the plate

B.Michelle Obama invented the plate

C.First Lady’s family don’t want to use the plate

D.the pyramid is too difficult for us to follow

判断题