将一个阻值是4Ω的电热器放进质量是0.5kg的冷水中，通过电热器的电流是5A...

9.An interesting project called Blue Zones is recording the lifestyle. secrets of the communities with the highest, hest concentrations of centenarians in the world.
The people in the five regions in Europe, Latin America,Asia and the US that live to be 100 have a lot going for them. Genes probably play a small role, but these folks also have strong social ties ,tightly-knit families and lots of opportunities to exercise.

A.
52.
B.People
C.People
D.People
E.People
F.To
G.To
H.To
I.To
J.In
K.Any
L.In
M.In
N.Tea-Drinking
O.Lifestyle
P.Tea-Drinking
Q.Blue

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10.We all love a hero, and rescue dogs are some of the biggest heroes of all. You will often find them going above and beyond duty to save someone, risking--and at times losing--their lives in the process.
Rescue dogs are generally found in the Sporting and Hunting Groups, or from the traditional Herding Group. These types include the Bloodhound, Labrador Retriever, Newfoundland, German Shepherd, Golden Retriever, and Belgian Malinois--all of which are chosen for search-and-rescue duty because of their amazing physical strength, loyalty, and their tendency for mental stability.
These types also have a keen sense of hearing and smell--to better locate lost individuals—and are often able to access hard-to-reach areas. As highly trained animals, they serve in many different fields, including specialist search, snow slide rescue, dead body location, and tracking.
To overcome obstacles and succeed when performing the demanding duties of a search-and-rescue worker, a dog must display certain qualities. In addition to intelligence and strength, the dog must be swift, confident, easily trainable, adaptable, and have a high level of stamina (耐力) and endurance. A strong sense of group cooperation and an ability to engage in friendly play during "down" time is also required of search-and-rescue dogs.

A.
40.
B.they
C.they
D.they
E.they
F.Courageous.
B.Cowardly
C.Energetic
D.Slow
Which
G.Sharp
H.Swift
I.Extraordinary
J.A
K.Selection
L.Qualities
M.
C.Risks
N.Types

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