B
Some schools in the United States offer Chinese language classes with government support from China.
Saint Mary’s School is a private college preparatory school in Medford, Oregon.
Carly Irvine is in her fourth year of learning Mandarin(普通话).
CARLY IRVINE: “Since China and America are working so closely and our relationship is growing more and more, I think it will be very important in the future to know Chinese.”
Saint Mary’s also teaches Spanish, German and Latin. It added Mandarin in two thousand five. Two years ago, it became the first school in the country to join the Confucius Classroom program.
The program pays about half the costs of a teacher sent to a school in the United States. China’s Education Ministry also provides books and other materials.
Saint Mary’s principal, Frank Phillips, says knowing Chinese will help students in a world where China is quickly gaining economic power.
Zheng Ling, a teacher at Saint Mary’s, came from China in two thousand eight.
ZHENG LING: “People do not know much about China, especially the latest development. So I think this is a chance for them to know more about China, what China is really like. It’s quite different from what it was twenty years ago.”
The Confucius Classroom program is in about forty countries, including more than fifty American schools and universities.
A recent report said more schools in the United States are teaching Chinese and Arabic, although the numbers are still low.
45. How many American schools and universities have the Confucius Classroom program?
A. 4. B. 20. C. 40. D. 50.
46. Which of the following is true about Saint Mary’s School?
A. It is a public college preparatory school.
B. It added Mandarin in two thousand six.
C. It became the first school in America to join the Confucius Classroom program.
D. It also teaches Spanish, German and French.
47. How does Carly Irvine think learning Chinese?
A. Helpful. B. Useless. C. Unnecessary. D. Terrible.
48. What’s the passage mainly about?
A. Some US Students Learn Mandarin with China’s Help.
B. China is quickly gaining economic power.
C. Saint Mary’s School.
D. Carly Irvine.
时（T为交流的周期），原线圈中的电流瞬时值为0.03A．变压器的原、副线圈的匝数比为（ ）
：3