句型攻关。

1. —你喜欢看电视吗？

    —_____  you like _____ television?

    —是的，我喜欢。

    —_____ , I _____ .

2. 我会骑自行车，但是我不会开车。

    I _____ _____ a bike, _____ I _____ _____ a car.

3. —你会弹钢琴吗？

    —_____  you _____ the piano?

    —不，我不会。

    —_____ , I _____ .

4. 夏天天气怎么样? 

    _____ the weather _____ in summer?

Documentation of a software package is normally produced for two purposes.One is to explain the(1)of the software and describe how to use them.This is known as (2)because it is designed to be read by the user of the software.The other purpose of documentation is to describe the software's intemal composition so that thesystem can be maintained later in its life cycle.Documentation of this type is known as(3)

空白（3）为（）

A.system documentation

B.user documentation

C.vender documentation

D.license documentation