问题 单项选择题

利用换填垫层处理地基时,下列说法正确的是( )。

A.垫层顶面每边超出基础底边不宜小于300mm

B.用于消除湿陷性黄土或膨胀土地基的粉质黏土垫层应当在土料中掺入适量的石块,以增大其透水性

C.垫层施工的质量检验分层进行,但是对于压实系数应每两层抽查一层,按10%抽检

D.利用贯入仪或动力触探检验垫层的施工质量时,分层检验点间距取垫层宽度的1/2~1/3

答案

参考答案:A

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。

If you participate in an online class, it is best to think of it as just another class. If you think that you will have less work, less stress, and more time on your hands, think again. Most students work harder in an online class than in a traditional classroom setting.

__小题1:___ However, many students take this flexibility for granted. They will rarely participate in their online classes. This is one of the main reasons why people fail when participating in an online class.

The key to success is time management and organization. Treat this class the same way you would treat a traditional class. ___小题2:___  But, in an online class, the students have to read the text, read the professor’s lecture notes, Participate  in online discussion forums, take exams, prepare essays, prepare individual or group assignments,etc. All of these must be done with very little help. So, if you are not self-motivated and disciplined, online learning is probably not for you.

Create a schedule for working on your assignments. Make sure your family members are aware of your schedule so you won’t be bothered during these times. ___小题3:___ Treat those times as you would if you had to physically attend a class.

Be sure you have the Tech Support phone number dandy as well, in case computer problem arise. ___小题4:___ That way, you won’t miss any assignments or deadlines due to technical difficulties.

___小题5:___ If you have some emergencies, you could end up missing a deadline and lowering your grade. Make sure you know your professor’s policy for accepting late assignments. Be sure to read comments given to you by your professor and always ask for help if you need it. These tips will help you to succeed in your online course.

People can attend online classes at any time.

No matter what happens, stick to your schedule.

Try to have a back-up computer that you can use.

Don’t wait until the last minute to submit assignments.

Communication online makes contact with each other easier.

Be sure you have the contact information for at least 2 other students.

In a traditional class, you have an instructor who leads lectures and discussions.

单项选择题