Elephants don’t forget—at least, female
elephants don’t. Elephant families are matriarchal. And the social knowledge
gained by the oldest females is the key to a family group’s survival, according
to a study published in April by Karen McComb, a biologist at Sussex University
in England. Elephants announce their presence by making a deep,
long sound, a practice referred to as contact calling (联络呼叫). An unfamiliar call
may mean that an elephant from outside the family group is nearby. A stranger
can cause trouble, interrupting feeding or disturbing the young. So an elephant
{{U}}matriarch{{/U}} signals the family to gather around her; then they all lift
their trunks in the air to smell the unfamiliar caller. False alarms can disturb
the group and take time and energy away from feeding, so survival may depend in
part on g A. An old member of an elephant family. B. A female head of an elephant family. C. A wise elephant. D. A large elephant.
更多"{{B}}Passage Four{{/B}}
"的相关试题:
[单项选择]{{B}}Passage Four{{/B}}
Elephants don’t forget—at least, female
elephants don’t. Elephant families are matriarchal. And the social knowledge
gained by the oldest females is the key to a family group’s survival, according
to a study published in April by Karen McComb, a biologist at Sussex University
in England. Elephants announce their presence by making a deep,
long sound, a practice referred to as contact calling (联络呼叫). An unfamiliar call
may mean that an elephant from outside the family group is nearby. A stranger
can cause trouble, interrupting feeding or disturbing the young. So an elephant
{{U}}matriarch{{/U}} signals the family to gather around her; then they all lift
their trunks in the air to smell the unfamiliar caller. False alarms can disturb
the group and take time and energy away from feeding, so survival may depend in
part on g A. When they are feeding the young. B. When they see a familiar elephant. C. When they are giving birth to baby elephants. D. When the leading elephant gives out a warning.
[单项选择]
Passage Four
Elephants who paint aren’t new. Paintings by Ruby, an Asian elephant who lived at the Phoenix Zoo in Arizona, sold for up to $ 5,000 in the late 1980s, said Dick George, a consultant with the zoo.
"Ruby was about seven months old when she first came to the zoo," said George. "She lived with a goat and some chickens, but she didn’t have an elephant companion for a number of years. She spent a lot of time drawing in the dirt with a stick to make her days more stimulating. Her keeper bought her some art sup- plies." George said, "Ruby was excited about painting right from the beginning."
The elephants at the art academies in the Southeast Asia are taught to hold a paintbrush with the tip of their trunks. Initially, the keeper guides the elephant’s trunk over the canvas(画布) and offers rewards for good performance.
"It only takes a few hours to a day to teach them," said Mia F A. who was sold for a price as high as $ 5,000 B. who was famous for being the first painting elephant C. whose paintings sold for as high as $ 5,000 D. who started painting in the late 1980s
[单项选择] Passage Four
Software Systems
Specialist
Work Schedule: Full Time |
Salary: $ 62,500- $ 92,000* |
Location: Washington, DC metropolitan
area |
* Employees within the organization have opportunities for
additional salary advancement to the Expert level.
Software Systems Specialists are responsible for the planning, implementation
and optimization of a wide variety of leading-edge systems software on Unix and
Linux-based enterprise class servers used to meet critical intelligence needs.
Team members are actively involved in the deploym A. $62,500 B. $92,000 C. less than $62,500 D. more than $92,000
[单项选择] Passage Four
Sports and games make our bodies
strong, prevent us from getting too fat, and keep us healthy. But these are not
their only use. They give us valuable practice in making eyes, brain and muscles
work together. In tennis, our eyes see the ball coming, judge its speed and
direction and pass this information on to the brain. The brain then has to
decide what to do, and to send its orders to the muscles of the arms, legs, and
so on, so that the ball is met and hit back where it ought to go. All this must
happen with very great speed, and only those who have had a lot of practice at
tennis can carry out this complicated chain of events successfully. For those
who work with their brains most of the day, the practice of such skills is
especially useful. Sports and games are also very useful for
character-training. In their lessons at s A. use, first, our eyes, then the brain and finally the muscles B. make our eyes, brain and muscles work almost at the same time C. use mainly the arms and legs to hit D. use mainly the muscles so that the ball is met and hit back
[单项选择] Passage Four
What is this passage about
a. The development of computer technonogy.
b. The development of Symantec Corporation.
c. Cyber attacks.
d. Computer techniques.
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