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
The aim of the voyages Maury was responsible for in the 1840 was ______.
A．to make some sounding experiments in the oceans
B．to collect sample of sea plants and animals
C．to estimate the length of cable that was needed
D．to measure the depths of the two oceans
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