Which of the following tribes came to Britain first?（）

The president (or head) of the House of Lords in Britain is （）

Which of the following is not true of Britain.s agriculture?（）

The English Channel separates the island of Great Britain from（）.

Scotland occupies the（）third of the island of Great Britain in the British Isles.

The capital of England and of Great Britain is（）

Directions:In this section, there is one passage followed by a summary. Read the passage carefully and complete the summary below by choosing no more than three words from the passage. Remember to write the answers on the Answer Sheet.　　Questions 1 - 5 are based on the following passage.The United Kingdom　　Britain (or Great Britain) is an island that lies off the north-west coast of Europe. The nearest country is France, which is 20 miles away and from which Britain is separated by the English Channel. The island is surrounded by the Atlantic Ocean to the west, and the North Sea to the east. It comprises the mainlands of England, Wales and Scotland, that is, three countries. Scotland is in the north, while Wales is in the west. Ireland, which is also an island, lies off the west coast of Britain. It consists of Northern Ireland and the Irish Republic. Britain together with Northern Ireland constitute the United Kingdom (UK). Thus, the United Kingdom is composed of four countries, the largest of which is England. The capital city is London, which is situated in south-east England.　　The UK has a total area of about 244,100 square kilometres (94,248 square miles). About 70% of the land area is devoted to agriculture, about 7% is wasteland, moorland and mountains, about 13% is devoted to urban development, and 10% is forest and woodland. The northern and western regions of Britain, that is Scotland and Wales, are mainly mountainous and hilly. Parts of the north-west and centre of England also consist of mountains and hills.　　Britain has a generally mild and temperate climate. It is, however, subject to frequent changes. It has an average annual rainfall of about 120 centimetres (47 inches).　　In 1998 the population of the United Kingdom was nearly 59 million. The density of population was approximately 240 people per square kilometre. However, in England, where 83% of the population live, the density was much higher, about 363 per square kilometre.　　In the UK, English is the first language of the vast majority of people. However, in western Wales, Welsh is the first language for many of the people. In Scotland only a small number of people speak Gaelic.　　In Britain about 66% of the population say that they are Christian, while fewer than 5% say that they belong to other religions.　　Summary:　　Britain is an island that 　1　the Atlantic Ocean and the North Sea. It comprises the mainlands of England, Wales and Scotland. Ireland 　2　the west coast of Britain. I 　3　Northern Ireland and the Irish Republic. The United Kingdom consists of Britain together with Northern Ireland. The capital city is London which 　4　outh-east England.In 1998 the population of the UK was nearly 59 million. The density of population was 240 people per square kilometre. In the UK English is the first language of most people. In western Wales, Welsh 　5　many of the people, but few people in Scotland speak Gaelic.

The sum of the sensible heat and the latent heat of any substance is known as （）.

There are two general approaches to attacking a （ ）encryption scheme.The first attack is known as cryptanalysis.Cryptanalytic attacks rely on the nature of the algorithm plus perhaps some knowledge of the general characteristics of the （ ） or even some sample plaintext-ciphertext pairs. This type of （ ） exploits the characteristics of the algorithm to attempt to deduce a specific plaintext or to deduce the key being used. If the attack succeeds in deducing the key, the effect is catastrophic: All future and past messages encrypted with that key are compromised. The second method, known as the （ ）-force attack, is to try every possible key on a piece of （ ） until an intelligible translation into plaintext is obtained. On average, half of all possible keys must be tried to achieve success.

Ancient Babylonian physicians were among the first to investigate the character an course of diseases scientifically,　　　　　　　　　　　　　　　　　　A　　　　　　　　　　　　 Balthough they frequently attributed the causes of those ailments to the anger of gods or demons. No error　　C　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D　　　　　　　　　　　　　　 E

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

The difference between the height of the metacenter and the height of the center of gravity is known as the（）.