Finding the Central Idea in a Passage
The idea of invisible ink had been around for a long time. Write using lemon juice as ink, for instance, and the writing will be invisible. Heat the paper, and the writing will appear, looking as if it were written in brown ink. British agents used two types of ink. One could be made visible by holding the paper over the flame of a candle; the other could be read by applying a common chemical. Major John André, the chief British intelligence officer in New York, told his agents to put an F in the corner of letters containing invisible ink needing fire to read and A for those needing acid.
âGeorge Washington, Spymaster,
Thomas B. Allen
What is the central idea of the passage?
Invisible ink isnât really invisible at all.
Lemon juice is the earliest form of invisible ink.
British agents used invisible ink to send secret messages.
Answers: 3
English, 22.06.2019 05:00, kyle696969
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English, 22.06.2019 07:30, nicolescaggs
What is the purpose of the scene in leo tolstoyâs the death of ivan ilyich in which ivan ilyich thinks about the following logical argument, known as a syllogism?
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English, 22.06.2019 11:30, abdullahs4639
Sloan manufacturing company is changing insurance carriers. this change will be effective january 1st. at that time, all employees will be asked to complete an eligibility form. this form will be available in the human resources department after december 15th. prior to that date, however, we will not have access to it. this upcoming change is very positive, and we are happy for the opportunity to provide insurance coverage to our employees. select the best answer the phrase "this upcoming change" refers to: a change in insurance benefits a change in insurance eligibility a change in employee benefits a change of insurance carriers
Answers: 3
Finding the Central Idea in a Passage
The idea of invisible ink had been around for a long time. Wr...
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