According to the passage the primary function of allelomimetic behavior in bird is to ______
A. defend nests against predators
B. look at each other
C. locate prey
D. warn against predators
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James Martin指出，以下因素Ⅰ．程序的适应性差 Ⅱ．数据格式的不一致，导致数据的共享性差Ⅲ．系统开发方法选择不当 Ⅳ．开发工具选择不当哪个(些) 是造成数据处理牛产率低的主要原因
A. Ⅰ、Ⅱ和Ⅲ
B. Ⅰ、Ⅱ和Ⅳ
C. Ⅰ、Ⅲ和Ⅳ
D. 全部
一般而言，有特色的名优产品宜于（ ）。
A. 凭样品买卖
B. 凭规格买卖
C. 凭实物买卖
D. 凭商标或牌号买卖
The main idea of the passage is about______.
A. global marine distribution
B. secrets of the world's oceans
C. research on marine life
D. satellite tracking devices
We are interested in buying your File Cabinets model 101 if they can be modified _______ indicated below.
A. so
B. as
C. as such
D. that
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