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【单选题】
以下模型中,包含了风险分析的是 ______ 。A.
喷泉模型
B.
增量模型
C.
演化模型
D.
螺旋模型
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反馈参考答案：
举一反三
【简答题】前列腺增生症最重要的症状是（ ）
【单选题】Cough syrups and cold remedies that are manufactured with alcohol will last much longer than those prepared with water.
A.
float
B.
finish
C.
remain effective
D.
be prescribed
【单选题】According to the passage, the cold of winter ______.
A.
improves the ability to think
B.
is the best time for thinking
C.
is better for thinking than is very warm weather
D.
incerases the ability to think
【单选题】听力原文：A: How is Canada's climate? Is it intolerably cold in winter? B: People tend to think that as Canada is a northern country, its winters must be harsh and long. But contrary to the popular belief,...
A.
Harsh and long.
B.
Gloomy.
C.
Long but sunny.
D.
Terrible.
【单选题】I think ______ a joke to stay on the bench in the park for a cold winter night. [ ]
A.
that
B.
it
C.
this
D.
which
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