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【单选题】
关于对焦下面理解不正确的是___。A.
使用手动对，半按快门能转换成为自动对焦
B.
对于静止或移动缓慢的对像，可以使用单次自动对焦
C.
使用手动对焦模式拍摄时，必须旋转对才能够准确对焦
D.
使用手动对焦模式拍摄时，半按快门相机无法自动对焦
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举一反三
【单选题】As for how to celebrate New Year's Eve, someone suggested that we hold parties at which we can ________ small gifts and eat heart-shaped cakes.
A.
change
B.
exchange
C.
shift
D.
communicate
【单选题】We him on his birthday and held a party to it.A．congratulate;celebrateB．celebrate;congratulateC．co
A.
We____ him on his birthday and held a party to ____it. A．congratulate;celebrate
B.
celebrate;congratulate
C.
congratulated;celebrated
D.
congratulated;celebrate
【单选题】Maria proposed that we ______ a party to celebrate the victory of our baseball team.
A.
held
B.
hold
C.
would hold
D.
will hold
【单选题】The author points out the rise of mass media of communication is a complex factor, because
A.
a lot of people like the mass media and it has great influence on people's mind.
B.
the mass media is a success and it requires creative efforts to be made.
C.
the mass media is the most effective, modern way of circulating information.
D.
the mass media aims at the median I. Q. and this fact kills the creative intelligence of people who work in this field.
【简答题】电子商务的基本组成要素有哪些？
【简答题】The mass media are important to us because they shape_____________
【单选题】眼科超声检查时发现：玻璃体暗区内出现强弧形回声光带，界面整齐菲薄，面向前，光带与眼球壁之间为液性暗区，眼球运动时，可见光带轻度震颤，运动方向垂直于眼球壁，请指出这最可能是哪种疾病（）
A.
部分性视网膜脱离
B.
完全性视网膜脱离
C.
陈旧性视网膜脱离
D.
脉脱性视网膜脱离
E.
牵引性视网膜脱离
【单选题】男性，35岁。黄疸已1个月，右上腹轻微胀痛，食欲不振，经内科治疗无效。查体：肝大，胆囊增大，血胆红素17μmol/L，AST70单位，AKP45单位，AFP5ng/ml。可能诊断是
A.
肝癌
B.
肝硬化晚期
C.
壶腹周围癌
D.
黄疸性肝炎
E.
胆总管结石梗阻
【简答题】电子商务的 基本组成要素 有哪些?
【单选题】听力原文： Mass media is the term used to denote, as a class, that section of the media specifically conceived and designed to reach a very large audience. It emerged in the 1920s with the advent of nation...
A.
Influence of mass media on our lives.
B.
Profitability of mass media.
C.
Mass media and its short history.
D.
Mass media and politics.
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