---How do you feel your trip to Mount Huang?---Fantastic!The scenery there impressed me deeply, especially the green pine trees.looking great the blue sky．( )A．onB．withC．inD．against 题目和参考答案——青夏教育精英家教网—

2．Do you know how it is when you see someone yawn and you start yawning too？Or how hard it is to be among people laughing and not laugh yourself？Well，apparently it's because we have mirror neurons （神经元）in our brains．
Put simply，the existence of mirror neurons suggests that every time we see someone else do something，our brains imitate （模仿）it，whether or not we actually perform the same action．This explains a great deal about how we learn to smile，talk，walk，dance or play sports．But the idea goes further：mirror neurons not only appear to explain physical actions，they also tell us that there is a biological basis for the way we understand other people．
Mirror neurons can undoubtedly be found all over our brains，but especially in the areas which relate to our ability to use languages，and to understand how other people feel．Researchers have found that mirror neurons relate strongly to language．A group of researchers discovered that if they gave people sentences to listen to （for example："The hand took hold of the ball"），the same mirror neurons were triggered as when the action was actually performed （in this example，actually taking hold of a ball）．
Any problems with mirror neurons may well result in problems with behavior．Much research suggests that people with social and behavioral problems have mirror neurons which are not fully functioning．However，it is not yet known exactly how these discoveries might help find treatments for social disorders．
Research into mirror neurons seems to provide us with ever more information concerning how humans behave and interact（互动）．Indeed，it may turn out to be the equivalent （相等物）for neuroscience of what Einstein's theory of relativity was for physics．And the next time you feel the urge to cough in the cinema when someone else does-well，perhaps you'll understand why．

67．Mirror neurons can explainC．
A．why we cry when we are hurt
B．why we cough when we suffer from a cold
C．why we smile when we see someone else smile
D．why we yawn when we see someone else stay up late
68．The underlined word"triggered"in the third paragraph probably means"A"．
A．set off B．cut off
C．built up D．broken up
69．We can learn from the passage that mirror neuronsA．
A．relate to human behavior and interaction
B．control human physical actions and feelings
C．result in bad behavior and social disorders
D．determine our knowledge and language abilities
70．What is the passage mainly about？D．
A．Ways to find mirror neurons．
B．Problems of mirror neurons．
C．Existence of mirror neurons．
D．Functions of mirror neurons．

3．

Humpback whales are sometimes called performers of the ocean．This is because they can make impressive movements when they dive．The name"humpback"，which is the common name for this whale，refers to the typical curve shape the whale's back forms as it dives． Sometimes the humpback will dive with a fantastic movement，known as a breach．During breaching the whale uses its powerful tail flukes to lift nearly two-thirds of its body out of the water in a giant leap．A breach might also include a sideways twist with fins stretched out like wings，as the whale reaches the height of the breach． A humpback whale breathes air at the surface of the water through two blowholes which are located near the top of the head．It blows a double stream of water that can rise up to 4meters above the water． The humpback has a small dorsal fin located towards the tail flukes about two-thirds of the way down its back．Other distinguishing features include large pectoral fins，which may be up to a third of the body length，and unique black and white spots on the underside of the tail flukes．These markings are like fingerprints：no two are the same． Humpback whales live in large groups．They communicate with each other through complex"songs"．	Quick Facts
	Size：	14m～18m in length 30～50tons in weight
	Living	Open ocean and shallow coastline waters
	Environment：	From warm tropical （热带的） waters，where they breed，to cold polar waters，where they eat．
	Diet：	Shellfish，plants and fish of small size
	Hunting：	Sometimes in groups，in which several whales form a circle under the water，blowing bubbles that form a"net"around a school of fish．The fish are then forced up to the surface in a concentrated mass．
	Current state：	endangered； it is estimated that there are about 5000～7000humpback whales worldwide．