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【单选题】
根据颜色技术原理,( )为基础三原色,理论上可采用三原色依据其比例和浓度调配出除了白色以外的各种不同色调, 而白色可用于调整彩色的深浅。A.
红、黄、蓝
B.
红、绿、蓝
C.
蓝、黄、灰
D.
橙、紫、红
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【单选题】The food we eat seems to have profound effects on our health.Although science has made enormous steps in making food more fit to eat ,it has, at the same time,made many foods unfit to eat. Some resear...
A.
Because of science , diseases caused by polluted food haven been virtually eliminated.
B.
It has caused a lack of information concerning the value of food.
C.
Because of the application of science,some potentially harmful substances have been added to food.
D.
The scientists have preserved the color of meats,but not of vegetables.
【简答题】晶体的滑移过程．其实质是位错的 和 的过程。
【单选题】一篇完整的广告文案是由______、______、______三部分组成。
A.
引题、正题和附文
B.
标题、正文和附文
C.
标题、正文和副文
D.
引题、正题和正文
【单选题】In the USA, jokes about politicians, women and the elderly are common, but these are ____in other cultures.
A.
good choices
B.
right one
C.
taboo
D.
safe topics
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