以下关于PowerPoint幻灯片背景的描述中，错误的是(61)。

It is possible to have more than one(75) open in Word at the same time.

The(74) program is generally translated to an object program, which is in a form. directly understandably by the computer.

(73) is a complex consisting of two or more connected computing units, it is used for the purpose of data communication and resource sharing.

One solution to major security problems is(72) ,which are frequently installed to fix known security holes.

(71) provides a data path between the CPU and external devices.

文档的编制在信息处理工作中占有突出的地位。以下关于文档的叙述中，不正确的是(70)。

专职信息处理技术员在录入文稿时，发现了原稿中的不当用词，正确的做法是(69)。

以下网页设计方式中，不能使用户快速有效地获取其所需信息的是(68)。

在Access中可以使用表达式，在表达式中出现的“&”运算符的含义是(67)。

关系R(A，B，C，D)和S(B，C，D)进行笛卡儿运算，其结果集为(65)元关系。