题目内容
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The underwater listening system was originally designed ______.
A．to trace and locate enemy vessels
B．to monitor deep-sea volcanic eruptions
C．to study the movement of ocean currents
D．to replace the global radio communications network
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更多“The underwater listening syste…”相关的问题
The reason some children are backward in speaking today is that ______.
A．they do not listen carefully to their mothers
B．their mothers are not intelligent enough to help them
C．their brains have to absorb too much language at once
D．their mothers do not respond to their attempts to speak
听力原文：W：I wish my hair were longer．
M：Yes，it's a pity you had it cut．If only you'd listened to me.
Q：What can we learn from the dialogue？
(18)
A．The man didn't want the woman to have her hair cut.
B．The woman followed the man's advice.
C．The woman is wearing long hair now.
D．The man didn't care if the woman had her hair cut.
The disadvantage of traditional underwater vehicles is their ______.
A．inferior designs
B．poor quality
C．limited power supply
D．water resistant ability
The underwater listening system was originally designed ________.
A) to trace and locate enemy vessels
B) to monitor deep-sea volcanic eruptions
C) to study the movement of ocean currents
D) to replace the global radio communications network
The underwater listening system was originally designed______ .
A．to trace and locate enemy vessels
B．to monitor deep-sea volcanic eruptions
C．to study the movement of ocean currents
D．to replace the global radio communications network
Why did the U.S. Navy set up underwater microphones around the world in the 1960s？
A．To listen for changes in ocean structure.
B．To listen for changes of ocean currents or volcanic activity.
C．To make sure whether there was a giant squid deep in the ocean.
D．To follow the track of the Soviet warships under water.
The so-called whiskey factor refers to ______.
A．shipwrecks presenting a deadly maze to divers
B．shipwrecks holding potential accidents for divers
C．divers taking a shot of whiskey underwater
D．divers losing their senses in the course of diving
What is the speaker's purpose in giving this talk？
A．To show how simple the mechanical aids for diving can be.
B．To provide an excuse for his changeable character.
C．To explore the philosophical issues of space travel.
D．To explain why he took up underwater exploration.
