单项选择题

A．in the middle of the semester
B．at the beginning of exams
C．at the end of the school year
D．in the middle of summer vacation
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单项选择题
A．The blood test results were made out yesterday.B．The blood test results have not been made out now.C．Dr. Jones knows the results.D．The man needs to test again tomorrow.
A．The blood test results were made out yesterday.
B．The blood test results have not been made out now.
C．Dr. Jones knows the results.
D．The man needs to test again tomorrow.
单项选择题
It was ______ that asked Maury for help in oceanographic studies.
A．the American Navy
B．some early intercontinental travelers
C．those who earned a living from the sea
D．the company which proposed to lay an undersea cable
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