题目内容：

    World War II began when the UK and France declared war on Germany, after German troops led by Adolf Hitler had invaded Poland on 1 September 1939 to claim land there as their own. Hitler had already invaded Austria and Czechoslovakia, so the war began over his plan to take more land for Germany.

The Siege of Leningrad is a famous event during World War II. For 900 days—from 8 September 1941 to 27 January 1944—the city of Leningrad in Russia was surrounded by German troops. That meant everyone inside the city had to stay there, and that there wasn't any way for food or other sources like medicine to get in. Many hundreds of thousands of people died during this time because there wasn't enough food or heating to go around, but the people who lived in Leningrad refused to surrender to the Germans.

In 1940, the French port of Dunkirk was the location of a big turning point for the Allie：in World War II. Hitler's armies bombed Dunkirk heavily, and many Allied troops were waiting on the beach to be rescued because they didn't have the resources they needed to fight back. From 26 May to 4 June, over 550, 000 troops were ferried to safety across the English Channel-the code name for this was 'Operation Dynamo'. Some British civilians（people who weren't in the army）even used their own boats to help save as many people as they could. The rescue operation helped to boost morale（士气）in Britain, where they really needed some good news. This helped in going into the next major event in World War II, the Battle of Britain.

June 6,1944 is also known as D-Day. On that day, the Allied forces launched a huge invasion of land that Adolf Hitler's Nazi troops had taken over. It all began with boats and boats full of Allied troops landing on beaches in the French region of Normandy. They broke through the German defences and carried on fighting them back through Europe for the next 11 months until they reached Berlin, where Hitler was then hiding.

1.What led to the outbreak of the second World War?

A.UK and France's declaring war on Germany.

B.German troops' invading Poland in 1939.

C.Hiter's starting an attack on Austria.

D.Hiter's plan for occupying more land.

2.What can be known from the Siege of Leningrad according to the passage?

A.This event lasted about two and a half years.

B.German troops cut all the supplies to Leningrad.

C.Many people were killed by German soldiers.

D.Leningrad was finally occupied by Germans.

3.Which event was the closest to the end of WWII?

A.The Siege of Leningrad. B.Operation Dynamo.

C.The Battle of Britain. D.The D-day Landings.

4.What can be a suitable title for the passage?

A.Causes of WWⅡ. B.Hitler's Invasion.

C.Great Wars in WWⅡ. D.War and Peace.