In some cases, when a predator approaches, fishes escape on hearing ______.
A. the sounds of other species
B. the sounds of their prey
C. the sounds of the approaching enemy
D. the sounds of their fellows
第1题:
Normally, when hearing compliments, a typical Chinese reaction is to show_____.
A. disagreement and anger
B. pride and gratitude
C. enjoyment and pride
D. modesty and humility
第2题:
A. when ASM disk goes offline
B. when one or more ASM files are dropped
C. when some disks in a disk group are offline
D. when some disks in a failure group for a disk group are rebalancing
第3题:
Which of the following statements can best be inferred from the passage?
A. Fishes only "speak" to communicate with each other.
B. Researches are now being made to study the significance of fish sounds.
C. Sea animals have a sharper hearing ability than men.
D. Sounds made by fish cannot be transmitted through the air.
第4题:
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第7题:
第8题:
第9题:
In which three cases does a checkpoint occur? ()
第10题:
informing readers of different sea creatures
describing predatory microscopic organisms
solving some long-lasting mysteries about the sea
discussing the environment for various fishes
第11题:
contacted
infected
contagious
infectious
第12题:
conflict
accord
harmonize
struggle
第13题:
A、to have been fined
B、to be fined
C、having been fined
D、being fined
第14题:
Passage Four
Most people do not think of fishes and other sea animals as having voices, and of those who are aware of the fact that many of them can "speak", few understand that these "conversations" have significance. Actually, their talk may be as meaningful as much of our own. For example, some sea animals use their "voices" to locate their food in the ocean expanses (广阔的区域); others use their "voices" to let their fellows know of their locations; and still others, as a means of obtaining mates. Sometimes, "speaking" may even mean the difference between life and death to a sea animal. It appears in some cases that when a predator (食肉动物) approaches, the prey (被捕的动物) depends on no more than the sounds it makes to escape.
Fish sounds are important to man, also. By listening to them, he can learn a great deal about he habits of creatures that make them, the size of the School they form, the patterns of their migrations, and the nature of the environments in which they live. He can also apply this nformation to the more effective utilization of the listening spots he has set up to detect enemy submarines (潜水艇). A knowledge of fish sounds can avoid confusion and unneeded effort when a "new" sound is picked up and the sound sentry (哨兵) must decide whether or not to call an alarm.
46. Among the people who know that many sea animals have voices, few ______.
A. know the meaning of their conversations
B. realize that they can communicate with each other
C. realize that they can make speeches
D. could understand their conversations
第15题:
ACCIDENTAL ESCAPE OF OIL OUT OF A TANK WHEN IT GETS TOO FULL BECAUSE PUMPING WAS NOT STOPPED IN TIME defines ______.
A.Overloading
B.Over discharging
C.Overflow
D.Overtaking
第16题:
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第20题:
捕食(Predator)
第21题:
organ
possession
conduct
faculty
第22题:
fricative
stop
affricate
lateral
第23题:
对
错