题目内容
阅读理解
Recent technological advances in manned and unmanned undersea vehicles have overcome some of the limitations of divers and diving equipment. Without a vehicle, divers often became slow-moving and their mental concentration(集中)became limited. Because of undersea pressure which affected their speech organs, communication among divers was difficult or impossible. But today, most oceanographers(海洋学家) make observations by means of instruments which are lowered into the ocean or make observations of samples taken from the water. Direct observations of the ocean floor are made not only by divers but also by deep-diving submarines. Some of these submarines can dive to depths of more than seven miles and cruise(巡游)at depths of fifteen thousand feet. Radio-equipped buoys(浮标)can be operated by remote control in order to transmit information back to land-based laboratories including data about water temperature, currents(水流)and weather.
(1)Divers have had problems in communicating underwater because ________.
[ ]
A.the pressure affected their speech organs
B.the vehicles they used have not been perfected.
C.they did not pronounce clearly.
D.the water destroyed their speech organs.
(2)This passage suggests that the successful exploration of the ocean depends upon ________.
[ ]
A.vehicles as well as divers
B.radio that divers use to communicate
C.controlling currents and the weather
D.the limitations of diving equipment.
(3)Undersea vehicles ________.
[ ]
A.are too small for a man to fit inside
B.are very slow to respond
C.have the same limitation that divers have
D.make direct observations of the ocean floor.
(4)Which of the following is TRUE?
[ ]
A.No divers make direct observations of the ocean floor now.
B.Not all the vehicles are operated by man.
C.Information includes the structure of the water molecule.
D.It's possible for the divers to communicate with each other.
解析:
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(1)见文章第三句。 (2)见倒数第三句。 (3)同前。 (4)见第一句。 |
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