问题 单项选择题

下列的叙述中,不正确的是( )。

A.结构化程序是指主要采取顺序、选择、循环3种基本结构编写的程序

B.BASIC源程序可在DOS下运行

C.用机器语言编写的程序可由计算机直接执行,用高级语言编写的程序必须经过编译(或解释)才能执行

D.计算机病毒也是一种程序,它在某些条件下激活,起干扰破坏作用,并能传染到其他程序中

答案

参考答案:B

解析:[分析] 结构化程序的特点就是采用顺序结构,选择结构和循环结构;计算机能执行的只有机器语言,高级语言必须解释成机器语言才能被计算机执行:病毒是能够通过修改其他程序而“感染”它们的一种程序,具有潜伏性,在某些环境下才被激活。所以选项A、C、D都是正确的。解释BASIC源程序不能在DOS下运行。

阅读理解

Every year the Greens go to the beach for a week’s vacation. There are many interesting things to do at the beach.

The children play games on the sand. Sometimes they build sandcastles (沙堆小城堡). There are saltwater (咸水的) swimming pools. The children can swim safely in these pools and the water is always clean.

There is an esplanade (海滨大道). This is a long road by the beach. There are many cafes (咖啡厅) and restaurants on the esplanade. There is also a park beside (在……旁边) the beach. This is a place that many people like to go to.

The Greens always stay at the same hotel. They usually have the same rooms. These rooms are at the front of the hotel. There is a good view of the sea from their windows. The children are a little sad when the vacation is over because they don’t want to leave.

小题1:How often do the Greens go to the beach?

A.Once a year.

B.Once a week.

C.Twice a year.

D.Every a half year.小题2:Which place do many people like to go to?

A.The hotel.

B.The saltwater swimming pool.

C.The esplanade.

D.The park beside the beach.小题3:What’s the meaning of the underlined word?

A.景色

B.观点

C.意见

D.观察小题4:Why are the children a little sad when the vacation is over?

A.Because their parents will go home.

B.Because they should go to school after the vacation.

C.Because they enjoy themselves so much that they don’t want to leave.

D.Because they can’t come to the beach any more.小题5:According to the story, which of the following is TRUE?

A.The Greens stay in the rooms at the front of the hotel.

B.If they want to see the sea, they must go to the beach.

C.They won’t go to the beach next year.

D.There are no restaurants by the beach.

判断题