7、D day is a term used to stand for the starting day of a campaign or planned series of actions. When the secret starting date is unknown, secret or subject to change, D day is the reference point which helps planners arrange every step of a campaign. For example, the day before D day is D - ; the day after: D+1, D+2 and so on.

The letter D here stands for Day, so D day actually means Day day. More commonly the term has a military usage. In fact, it came into being during the First World War, but it was during the Second that D day got its common usage.

    The beginning of the end of the Second World War was the allied landing of Europe, and D day was its starting date. After months of careful planning, the exact day was fixed for June 5, 1944．Because of impossible weather conditions, at the minute the landing was put off until the following day.

1．If a man – made satellite is planned to launch on August 1 st, but for some reason, it is launched of July 29 th, then according to the passage, the day is          ,

                                       A．D – 2                  B．D – 3                  C．D+2      D．D+3

2．The allied landing of Europe            .

                                       A．brought the Second World War to an end

                                       B．started the Second World War

                                       C．took place on the day D - 1

                                       D．was the end of the Second World War

3．Why was the landing of Europe put off in the Second World War?

                                       A．Because it had been carelessly planned

                                       B．Because it was fine that day.

                                       C．Because it was raining that day.

                                       D．Because it wasn’t suitable for attacking that day.

4．Which of the following is true according to the passage?

                                       A．D day is a term used only in a campaign.

                                       B．In fact, the term D day is June 5, not June 6.

                                       C．D day is helpful for people to plan something to be happening.

       D．June 1 st, Children’s Day can be called D day.