问题 单项选择题 共用题干题

患者男,56岁,缺失,双侧第一前磨牙做基牙,远中支托,三臂卡环,舌杆大连接体,义齿戴用1周后,主诉基托压痛,基牙咬合痛,检查见,舌系带根部有一个小溃疡,左侧下颌舌隆凸处黏膜红肿,双侧下颌第一前磨牙叩痛,义齿各部分密合,咬合不高。

为了减轻基牙所受到的扭力,可以采取的措施除了()。

A.增加基牙

B.用RPI卡环

C.人工牙减数

D.减小基托范围

E.用回力卡环

答案

参考答案:D

阅读理解

2011 TEEN TRIP TO THE LELAND HIGH SNOW PLAY

For Teens Currently in 6th to 12th Grades

LELAND HIGH SNOW PLAY -- Class # 8389

Saturday, February 12, 2011

8:00 a.m. to 7:00 p.m.

Meet at THE UNDERGROUND (Veteran's Building -- 2203 Central Avenue)

Cost per person: $50 ($60 after January 22, 2011) Includes Lunch, Admission and Transportation

With a 4,000 sq. Ft. day-use lodge, the Leland High Snow Play has a huge supply of tubes to choose from, along with awesome tows (拖车) that will tow you up to the top of the hill! Our varied terrains (地形) have something for everyone, while the lodge provides a snack bar, video games, pool tables, five indoor rest rooms, a warm fire, and a sun deck with plenty of tables and chairs overlooking the play area outside. ADDITIONAL LIABILITY FORM REQUIRED FOR THIS TRIP.

Be sure to bring warm clothing and prepare for the cold, but dress in layers in case it warms up. Wear dry boots, socks, and sunscreen. If possible, bring a mobile phone in case of emergency, as well as money for snacks and a light dinner: or bring your own food and drinks.

Meet at The Underground (Veteran's Building -- 2203 Central Avenue) -- don't be late!

Do not bring electronic or fragile items during the trip. The ARPD is not responsible for your personal belongings or money. REFUNDS ARE ISSUED ONLY IF THE ARPD CANCELS THIS TRIP DUE TO WEATHER CONDITIONS.

Click here to download "2011 Leland High Snow Play" flyers and the registration form (PDF, 261KB)

Click here to download "Leland High Snow Play Liability Form" (PDF, 14KB)

1. You may register in person, or mail the completed form to Leland High Snow Play, Inc.

Send the liability form and payment to the ARPD Office, 2226 Santa Clara Avenue, Alameda, 94501.

2. Faxed registration and liability forms accepted with MasterCard/VISA, (510) 747--7566.

3. Online registrations available at www.arpdeplay.com. Make sure you bring your completed liability form on the trip.

小题1:The purpose of the text is to ________.

A.explain the details of a school activity

B.introduce a famous tour agency

C.urge teenagers to climb a snowy mountain

D.advertise a trip to the Leland High Snow Play小题2:People who want to take part in the activity need to ________.

A.pay for dinner themselves

B.climb the hill themselves

C.wear hats to protect themselves from the sun

D.pay for tows individually小题3:From the text we can infer that ________.

A.the weather at the hill is changeable

B.the activity is very dangerous

C.12-year-old children are not allowed on the trip

D.the trip will involve outdoor activities only.小题4:To save money people should ________.

A.climb the hills instead of taking tows

B.bring extra clothing

C.register for the activity before January 22

D.register on the Internet after January 22

单项选择题