单项选择题

A．The conversion of volcanic waste to fertilizer.
B．The menace of currently dormant volcanoes around Mount Saint Helens.
C．The eruption of Mount Saint Helens and its effects on the environment.
D．The elimination of volcanic ash by natural means.
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单项选择题
A．The distance-learning course is free of charge.B．The distance-learning course is taught by professors overseas.C．There is no regular class in the distance-learning course.D．There is no exam in the distance-learning course.
A．The distance-learning course is free of charge.
B．The distance-learning course is taught by professors overseas.
C．There is no regular class in the distance-learning course.
D．There is no exam in the distance-learning course.
问答题
For this part, you are allowed 30 minutes to write a composition on the topic Aging of the Population. You should write at least 150 words according to the outline given below in Chinese:1. 我国人口老龄化现象日趋严重；2. 人口老龄化给社会、家庭带来越来越多的负担；3. 如何妥善解决人口老龄化问题。
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