【单选题】【消耗次数：1】
For thousands of years man dreamed （） seemed impossible dreams about flying.
①
what
②
that
③
which
④
why
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相关题目
【单选题】
Paper_______by Chinese for thousands of years now.
①
has made
②
has been made
③
was made
【单选题】
There are many ____ between the young and the old about their dreams.
①
difficult
②
differences
③
different
④
difficulties
【单选题】
3.It is impossible for a man like him to bear the ______ of being suspected as a thief.
①
fame
②
stigma
③
reputation
④
mark
【单选题】
A: What about going for a walk? B: [填空].
①
Thats all right
②
Walking is good to you
③
Why not? A good idea
④
Its up to you
【单选题】
Which of the following statement is not true about vocabulary?
①
a vocabulary item can be more than one word
②
Vocabulary can not be taught. It must be learned by the individuals
③
Words are best learned in context
④
An English-English dictionary is an important aid for students.
【单选题】
Which of the following is NOT true about The Canterbury Tales?
①
It is written in the form of a dream.
②
Chaucer chose a pilgrimage as the framework for the stories.
③
It is written for the greater part in heroic couplet.
④
“The General Prologue” introduces the pilgrims, the time and occasion of the pilgrimage.
随机题目
【单选题】
以下那种情况最适合进行全冠修复（）
①
上中切牙外伤导致牙冠1/2缺损，已完成根管治疗
②
上颌侧切牙大面积龋坏呈残根状
③
轻中度氟斑牙，要求改善颜色
④
锥形侧切牙，要求改善外形
⑤
上前牙重度拥挤、排列不齐
【单选题】
关于全瓷冠的应用说法错误的是（）
①
釉质缺损过多、不适宜贴面修复的患牙可以使用全冠修复
②
牙体缺损过大时，需要进行桩核冠修复
③
全瓷冠可以用于重度变色牙的修复
④
活髓牙不能进行全冠修复
⑤
当外伤折断超过冠部1/2时，应当考虑全冠修复而不是贴面修复
【单选题】
哪种全瓷冠最适宜死髓重度变色牙的修复（）
①
单层白榴石增强型玻璃陶瓷全冠
②
单层氧化锆全冠
③
双层氧化锆全冠
④
单层二硅酸锂增强型玻璃陶瓷全冠
⑤
树脂基陶瓷全冠
【单选题】
全瓷冠牙体预备量正确的是（）
①
双层全瓷冠边缘为0.5mm无角肩台
②
高透氧化锆单层全瓷冠切端预备量一般为2mm
③
单层全瓷冠唇面最薄可达0.3mm
④
双层全瓷冠唇面和舌面预备量相同
⑤
前牙全瓷冠边缘均位于龈上0.5mm
【单选题】
对于全瓷材料分类及特性说法错误的是（）
①
长石质瓷属于玻璃基陶瓷，半透明性较好
②
氧化锆陶瓷机械强度高
③
高透氧化锆具有一定的半透明性
④
二硅酸锂增强型玻璃陶瓷机械强度很差，不适宜单独使用
⑤
单层全瓷冠也可在切端少量饰瓷