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Dear Mrs. Malcolm:
We hear that John has graduated ......

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问答题
Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be read at normal, speed, listen and by to understand the meaning. For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be read at normal speed again and during this time you should check your work. You will then be given 2 minutes to check through your work once more. Please write the whole passage on ANSWER SHEET ONE.
单项选择题
How did the military assist in the investigation of health problems
A．By registering annual birth and death rates.
B．By experimenting with different building materials.
C．By maintaining records of diseases and potential causes.
D．By monitoring the soldiers' diets.
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