[填空题]In order to transmit nerve impulses to its neighbour, a neurone sends ______ known as neurotransmitters.

[填空题]In order to transmit nerve impulses to its neighbour, a neurone sends ______ known as neurontransmitters.

[单项选择]The human body has developed its millions of nerves to be highly aware of what goes on both inside and outside of it. This helps us adjust to the outside world. Without our nerves and our brain, which is a system of nerves, we couldn’t know what’s happening. But we pay for our sensitivity. We can feel pain when the slightest thing is wrong with any part of our body. The history of torture (折磨) is based on the human body being open to pain.
But there is a way to handle pain. Look at the Indian fakir (苦行僧) who sits on a bed of nails. Fakirs can put a needle fight through an arm, and feel no pain. This ability that some humans have developed to handle pain should give us ideas about how the mind can deal with pain.
The big thing in withstanding pain is our attitude toward it. If the dentist says, "This will hurt a little," it helps us to accept the pain. By staying relaxed, and by treating the pain as an interesting sensation (感觉), we can handle the pain without falling apar
A. stay relaxed
B. avoid pain
C. stand torture
D. feel pain

[填空题]In order to retire its aging single truck cars, over the next six years, the company bought 45 double truck cars, half of which were second-hand, coming from Cleveland and Somerset, partly for lack of money.

[填空题]The man tried many times to sneak into the neighbouring country, ______ (结果每 次都被警察逮捕).

[单项选择]Nerve signals may travel through nerve or muscle fibers at speeds as high as two hundred miles per hour.
A. velocities
B. impulses
C. ratios
D. atrocities

[单项选择]The suspect （） that he had not been in the neighborhood at the time of the crime.
A. advocated
B. alleged
C. addressed
D. announced

[填空题]In order to gains more money from its investors, a corporation may issue split stock.

[单项选择]Why do nerve cells have fibres
A. To reproduce themselves.
B. To stretch and grow.
C. To attach themselves to muscle.
D. To carry messages.

[单项选择]What is one function of sensory nerve cells
A. To move the muscles.
B. To detect light.
C. To protect the nerves.
D. To soothe the brain.