如果总增益降低，那么（） A.施加于患者的能量降低 B.所有回声的强度都降低相同水平

What brings a nation together? Of the four choices — shared values, language, history, and religion, it’s shared values. In our latest poll (民意调査), seven out of 16 countries chose values as the greatest factor (因索）bringing a nation together, and six preferred language. Both choices scored high in the poll, suggesting that our values and how we express them are closely linked Still, history was not forgotten in some countries, particularly in Mexico and Russia. Even Canada and the United States chose national histories as the second-most important factor uniting their people. The biggest surprise? Not one country picked religion as its top choice.

Respect your elders In most countries, the oldest generation considered values more important to a nation than did those who are under 45 years old.

Do you speak Canadian? Language scored lower in Canada than in all other countries polled, perhaps because the country speaks two official languages, French and English.

Church and state Most people polled do not connect their religious beliefs to their national pride. Religion ranked last in 13 countries — with France scoring it at 1%, the lowest of all.

小题1:According to the poll, what was the most important factor in bringing a nation together?

A．Language.

B．Values.

C．History.

D．Religion.

小题2:In which country did language score the lowest in their national pride?   

A．Canada.

B．Mexico.

C．France.

D．America.

小题3:According to the charts, shared values and language were considered equally important in         .  

A．Australia

B．Brazil

C．China

D．India