1吨=______千克 3000米=______千米60毫米=______厘米

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问题填空题

1吨=______千克	3000米=______千米
60毫米=______厘米	1吨+60千克=______千克
6吨＜______千克	______千米＞4千米．

答案

（1）1吨=1000千克；

（2）3000米=3千米；

（3）60毫米=6厘米；

（4）1吨+60千克=1060千克；

（5）6吨＜7000千克（答案不唯一）；

（6）5千米＞4千米（答案不唯一）．

故答案为：1000，3，6，1060，7000，5．

单项选择题

Accelerated analysis approaches emphasize the construction of (71) to more rapidly identify business and user requirements for a new system. As an accelerated analysis technology, (72) reads the program code and automatically generates the equivalent system model, and the code can be obtained from (73) All system analysis approaches require some form of (74) which includes those techniques to be used to identify or extract system problems and solution requirements from user community. (75) is a classical set of techniques used to collect information about system problems, opportunities, solution requirements, and priorities.

（73）是（）

A. existing database and application program

B. application program and user interface

C. existing database and user interface

D. existing database, application program and user interface

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选择题

下面是细胞核移植实验简图，该实验不能得出的结论是（　　）

①灰鼠胚胎细胞的细胞核去除细胞核的黑鼠的受精卵灰色小鼠

②黑鼠胚胎细胞的细胞核去除细胞核的灰鼠的受精卵黑色小鼠．

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