单项选择题

A．Travelled seven years to the surface of Titan.
B．Travelled from one planet to another for more than seven years.
C．Transmit registering datum to the Earth.
D．Transmit registering datum to Cassini spaceship.
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单项选择题
A．Because the security is the guarantee to advance sustainable economic growth and regional prosperity.B．Because it is completely the mission of APEC members to ensure the security of their people.C．Because the leaders recalled the acts and consequences of terrorism as tragically manifested.D．Because these countries have confronted the terrorism and its disastrous effects on people.
A．Because the security is the guarantee to advance sustainable economic growth and regional prosperity.
B．Because it is completely the mission of APEC members to ensure the security of their people.
C．Because the leaders recalled the acts and consequences of terrorism as tragically manifested.
D．Because these countries have confronted the terrorism and its disastrous effects on people.
单项选择题
A．Ask Dr. Smith to alter his decision.B．Ask Dr. Smith to call the library.C．Get the book directly from Dr. Smith.D．Get Dr. Smith’s written permission.
A．Ask Dr. Smith to alter his decision.
B．Ask Dr. Smith to call the library.
C．Get the book directly from Dr. Smith.
D．Get Dr. Smith’s written permission.
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