A.Recent development in camera technology.
B.How to make white light.
C.The additive and subtractive methods of producing color.
D.The discovery of the spectrum.
A.They should adopt needy children.
B.They should assist in their husbands′trade or business.
C.They should work only within their own homes.
D.They should be apprenticed.
开始考试点击查看答案A.financially responsible for herself
B.returned to England
C.supported by her family
D.trained to be a nurse
开始考试点击查看答案A.Supplemented.
B.Confirmed.
C.Improve
D.D.Determined.
开始考试点击查看答案A.Puritan communities.
B.Seaports.
C.Frontier settlements.
D.Capital cities.
开始考试点击查看答案A.calculated
B.elementary
C.imaginary
D.modern
开始考试点击查看答案A.Judges.
B.Lets through.
C.Dies.
D.Goes over.
开始考试点击查看答案A.Yellow and blue.
B.Magenta and green.
C.Black and white.
D.Cyan and red.
开始考试点击查看答案A.Subtractive colors are more realistic.
B.The subtractive process is more efficient.
C.B.The subtractive process is more efficient.C.Additive chemical techniques are too complex.
D.The additive process is still being developed.
开始考试点击查看答案A.Creating and passing on knowledge.
B.Drilling and learning by rote.
C.Disciplining students.
D.Developing moral principles.
开始考试点击查看答案A.discuss moral issues
B.study the classics, rhetoric, and music
C.study overseas
D.work more independently
开始考试点击查看答案企事业内部考试类其他其他积分换房
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