71. Program ______ graphically present the detailed sequence of steps needed to solve a programming problem.
A.modules
B.flowcharts
C.structures
D.functions
A B C D
B
[解析] 程序流程图以图形方式展示了解决程序设计问题所需的一系列步骤。
72. ______ languages enable nonprogrammer to use certain easily understood commands to search and generate reports from a database.
A.Machine
B.Assembly
C.High-level
D.Query
A B C D
D
[解析] 查询语言使非程序员能用一些易于理解的命令从数据库中检索数据并生成报告。
73. Today it is common to access the Internet from a variety of ______ devices like smartphones and tablets.
A.mobile
B.move
C.moving
D.shift
A B C D
A
[解析] 今天,使用各种移动设备(如智能手机、平板电脑)来上网已十分普及。
74. For data transmission to be successful,sending and receiving devices must follow a set of communication rules for the exchange of information. These rules are known as ______.
A.E-mail
B.Internet
C.network
D.protocols
A B C D
D
[解析] 为成功地传输数据,发送设备和接收设备必须遵循一套信息交换的通信规则。这些规则称为协议。
75. Computer ______ focuses on protecting information, hardware, and software from unauthorized use and damage.