医学博士英语统一考试之后，即将迎来各院校的考博英语初试，英语考试的备考，参考历年真题是一个很重要的备考过程，今天新东方在线小编给大家整理了北京大学2009年考博英语真题，帮助大家更好的备考，考博英语考试，一起来看看吧!
One story (55) that, during the winter of 1708—1709，Fahrenheit took a measurement
of 0 degrees as the coldest temperature outdoors—which would now read as minus 17.8°C. Five
years (56) he used mercury instead of alcohol for his (57) ，and made a top reference
point by measuring his own body temperature as 90 degrees. Soon afterwards he became a glassblower, (58)______allowed him to make thinly blown glass tubes that could be marked up with more points on the scale and so (59)______accuracy.
Eventually he took the (60) point of his temperature scale from a reading made in ice,
water and salt, and a top point made from the boiling point of water. The scale was recalibrated
using 180 degrees between these (61) points and Fahrenheit was able to make much more
accurate and more (62) measurements of temperature.
But in 1742 a rival challenged the Fahrenheit scale and (63) superseded it. Anders
Celsius, in Sweden, invented a scale of 100 degrees between the freezing and boiling points of
water and gradually (64) over many countries. However, the British (65) wedded to
Fahrenheit until well into the 20th century.
51. A. thousand B. hundred C. decades of D. hundreds of
52. A. initial B. final C. first D. last
53. A. alcohol B • mercury C. sand D. salt
54. A. scale B. measurement C. points D. degrees
55. A. says B. rumors C. concludes D. goes
56. A. ago B. before C. after D. later
57. A. thermometers B. measurements C. points D. degrees
58. A. thereby B. which C. that D. what
59. A. enlarge B. add up C. increase D. promote
60. A. eldest B. lowest C. coolest D. deepest
61. A. three B. four C. two D. dual
62. A. continuous B • continuant C. coherent D. consistent
63. A. eventually B. accidentally C. surprisingly D. fortunately
64. A. took B. turned C. brought D. won
65. A. kept B. remained C. maintained D. sustained
Part Six Writing (15%)
Directions: Read the following paragraph and then write a response paper of about 250 to 300 words. Write it neatly on ANSWER SHEET (2).
The total number of national holidays in China is stipulated by law. Yet people still argue about whether there should be “long holidays” or “short holidays” i.e. greater number of holidays concentrated around a great festival, or holidays scattered over a number of festivals. Which do you subscribe to, and why?