题目内容
（请给出正确答案）
[主观题]
Which of the following statements about the state of oceanographic research does the text
most clearly support？
A．Undersea research is still incomplete.
B．Technology used in undersea studies is still in a very primitive stage of development.
C．More undersea research is conducted near shore than in mid ocean.
D．Military researchers have made several momentous discoveries about undersea life.
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