问题 单项选择题

与十进制数4625等值的十六进制数为

A.1211

B.1121

C.1122

D.1221

答案

参考答案:A

解析:解析:十进制整数转换成十六进制整数的方法是“除十六取 余”法,即将十进制数除16得一商数和一余数;再将商除16;这样不断地用所 得的商去除16,直到商为0为止。每次所得的余数即对应的十六进制整数的 各位数字(从低到高)。

阅读理解

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

William Shakespeare once wrote, “Better three hours too soon than a minute too late.” While this may be a stretch, the principle is correct.       1      

Throughout your life, you will encounter similar circumstances that require punctuality, such as handing in homework assignments; arriving at school, a job or a meeting; picking up someone from the airport, school, work, etc. avoid embarrassing moments by ridding yourself of any tendency to be late.

Here are some tips:

● Learn to manage your time wisely, which includes setting deadlines. There are a fixed number of minutes in a day---and only one of you.       2     

      3       This ensures they do not assume that you will be available for other projects.

● Procrastination(拖延) is a thief of time---avoid it at all costs! This includes waiting until the last second to start a task simply because you find it unpleasant.

     4       Worrying about it will not accomplish anything!

● Before agreeing on a particular time for something, think about other events that might interfere.

● Try counting back from the scheduled time to figure out when you should begin getting ready.      5       For example, if you are scheduled to be at work at 9:00 a.m., a 30-minute car ride makes it 8:30, 15 minutes to eat breakfast makes it 8:15, and 30 minutes for grooming(洗刷) makes it 7:45, and so on.  

A.If a task is difficult, do it first.

B.It is always better to be early rather than late.

C.Make sure others are aware of your deadlines.

D.A few minutes delay may not be a serious matter.E. Moreover, habitual unpunctuality leads to indolence (懒散) and even failure in life.

F. Do not worry about the particular order of events; just assign(分配) time values to each.

G. Taking on too many responsibilities means that something will not be finished on time.

单项选择题