从以下选项中选出适合个段落的首句。选项中有一项是多余的。

A、You’d better plan regularly.

B、You should build a right attitude.

C、You will benefit from a balanced study.

D、It is always better if you keep comprehensive notes.

E、It’s a good habit to share thoughts and views with other students.

F、Studying before class is as important as researching the subject after class.

Studying Tips and Techniques

    If you often find yourself struggling with your studies, here are some useful tips and techniques that can help you out…

1.____________ It is a common misconception that self-study can begin only after a particular topic or chapter is taught in class. You should start preparing for the class in advance. After attending classes, it is of great importance that you have time to review the notes that you have taken during the class as well as try and read more about the subject on your own. Be it （无论是）reference books, or e-books, try and find more information about your subject so that you have a comprehensive（全面的）view of the topics. Often while reading and self-studying, it happens that you come across doubts and questions that did not occur to you in the classroom. Try and answer these questions yourself with the help of books or the internet. However in case you fail to answer, write down these questions so that you remember to clarify the questions in your next class.

2.____________ Involve yourself in group discussions about the subjects that you are studying. Group discussions can be a great way to broaden your viewpoint over important issues since group discussions give every group member a chance to voice their understanding, which might not necessarily be alike. Group discussions are thus a healthy and a rather informal way of exchanging information and discussing issues. Many teachers encourage the group discussion technique in their classroom as well.

3.____________ No matter how much people disapprove of the process and the timetables, it is a known fact that having a clear and detailed project makes it easier for a person to reach a goal. According to your convenience, map out your daily / weekly/ monthly study. It is always better to have a weekly or a daily arrangement, so that unexpected changes in class schedules or any other changes can be taken into consideration accordingly.

4.___________ Yes, there exist some species of students who burn the midnight oil. The studying process should be such that it leaves enough room for a student to join in entertainment activities and relaxation. Always chalk out a schedule that will not influence your sleep, your health, your sports / entertainment activities and other routine tasks. Also studying a single subject at a stretch (like an entire week or so), can get boring, for this reason plan a schedule that helps you switch from one subject to another in enough time.

5._________ Normally students get too caught up with grades, the percentage and the entire marking system. Always remember that if you study with the aim of acquiring knowledge, the grades will be brighter. However, if you just aim for high grades, there is a chance you might get the grades, but you will miss out on acquiring comprehensive knowledge on a particular subject. Always study with the right point of view, and you will never have to worry about your grades. Knowledge is way beyond grades.

 ―Don’t give up.

.   ―But what can we do ?I can’t see there is a chance _________we will win.

A. if                                B. as                     C. when                      D.  that

―Don’t give up.

.   ―But what can we do ?I can’t see there is a chance _________we will win.

A. if                                   B. as                     C. when                      D.  that

techniques , but he admitted there would be difficulties in meeting his goal .

“ For example , if you run out of ink while printing on paper , you will throw that paper away . But you cannot throw half-completed buildings away if your material gets stuck , ” he said . Although the printed house is not available to visit , there is a chance for people in Shanghai to see items printed in 3D.

The Belgium-based company Materialise NV held a 3D printing exhibition in Shanghai that started in late 2012 and ended in the middle of 2013 . The company is eager to show Asia what is possible with 3D printing .

“ All the pieces shown here are what cannot be made through traditional techniques . A good example of this customization is hearing aids . More than 10 million people already use 3D printed hearing aids, all made according to the size of their ears , ” said Wim Michiels , executive vice-president at Materialise NV .

“ You can produce anything whenever and wherever you like . You don’t need to set up production lines for pieces that only need a limited amount of products . Setting up a production line is a lot of work . It takes a long time and is very expensive for a limited number of pieces , ” said Michiels .

Kim Francois , managing director of Materialise China , said their European and American clients have already taken the next step toward additive manufacturing with small series production such as hearing aids .

1.What is mainly talked about in the text ?

A. The development of 3D printing .

B. A 3D printing show in Shanghai .

C. Varieties of items printed in 3D .

D. The company Materialise NV .

2.According to Behrokh Khoshnevis , what is the main difficulty in printing buildings ?

A. Time .??????? B. Technique .??????? C. Space .???????? D. Material .

3.The example of 3D printed hearing aids was mentioned to show that ______________.

A. these items used to be impossible to make

B. 3D printing has a large market share

C. 3D hearing aids help people hear better

D. people need different sized hearing aids

4.According to the text , 3D printing is suitable for ___________ .

A. mass production

B. making small items

C. small series production

D. reducing production costs

Xiao Ming practises his spoken English once there is a chance and that is_________ it takes to live his dream to be a good guide．

A．what           B．that           C．how            D．why