单项选择题

What does SMS stand for

A．Short message service.
B．Sound modulation system.
C．Advanced information service.
D．Special mobile system.
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单项选择题
The main idea of the passage is about______.
A．global marine distribution
B．secrets of the world's oceans
C．research on marine life
D．satellite tracking devices
单项选择题
The main topic of the passage is the ______.
A．value of allelomimetic behavior in vertebrate and invertebrate species
B．definition and distribution of allelomimetic behavior
C．relationship of allelomimetic behavior to the survival of the fittest
D．personality factors that determine when an individual animal will show allelomimetic behavior
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