68.Some schools offer teachers( )working hours， recognizing their need to balance work and private life.

3. Passage 15 There is a commonly held myth that Einstein was an underachiever at school， but it really isn＇t true. While he may have had difficulties with languages， Einstein excelled in physics， mathematics and music. Einstein held many patents and was a keen inventor. While working at Swiss patent office in Bern he took it upon himself to write his own scientific papers in his spare time， mostly at weekends and in the evenings after work. 1905 was Einstein＇s miracle year. During this year he wrote three fundamental papers， any of which would have guaranteed him immortality in the world of physics. His first was on a new understanding of the structure of light. Einstein argued that light is composed of small particles of energy， called photons， as well as oscillating waves. The second paper built upon the theory of kinetics. Einstein explained how atoms were responsible for the buffeting of particles of material in suspension， like cigarette smoke suspended in air. This paper presented the first direct evidence for the existence of atoms， vindicating an idea that had been around for over 2000 years. His third paper of 1905 was ―On the Electrodynamics of Moving Bodies‖. Here Einstein derived the theory of ―special relativity‖. In a supplementary paper four months later， he formulated the famous equation， E=mc2， where mass and energy are equivalent， showing that a very small amount of mass converts to a huge amount of energy. This is the driving force behind atomic bombs， and all the stars in the Universe. What effect did Einstein‘s second paper have?

A. 　It explained how light was composed of.

B. 　It explained how cigarette smoke suspended in air.

C. 　It provided direct evidence to oppose the existence of atoms.

D. 　It proved an idea that remained unclear for over 2000 years.

174.Many moving stories of that time remain( )in people‘s heart to this day.

A. 　deeply

B. 　 strongly

C. 　 strong

D. 　 deep

84.The movie was over and the crowds( )into the street.

A. 　broke down

B. 　 spilled out

C. 　 pulled through

D. 　 moved over

33.( ) over 100 students will take part in the speech contest which is to be held next week.

A. 　Estimating that

B. 　 Estimated that

C. 　 It is estimated what

D. 　 It is estimated that

6.It took him almost three hours to( )the distance from his office to his home.

A. 　cross

B. 　 reach

C. 　 cover

D. 　 gain

157.Many of his classmates( )to work in the countryside.

A. 　violent

B. 　 volunteer

C. 　 violation

D. 　 vulnerary

196.Nobody noticed the thief slip into the house because the lights happened to .

A. 　light up

B. 　 give in

C. 　 be turned on

D. 　 go out

2. Passage 5 Today anyone will accept money in exchange for goods and services. People use money to buy food， furniture， books， bicycles and hundreds of others they need or want. When they work， they usually get paid in money. Most of the money today is made of metal paper. But people used to use all kinds of things as money. One of the first kinds of money was shells. Shells were not the only things used as money. In China， cloth and knives were used. In the Philippine Islands， rice was used as money. In parts of Africa， cattle were one of the earliest money. Other animals were used as money too. The first metal coins were made in China. They were round and had a square hole in the center. People strung them together and carried them from place to place. Different countries have used different metals and designs for their money. The first coins in England were made of tin. Sweden and Russia used copper to make their money. Later， other countries began to make coins of gold and silver. But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money. They began to use paper money. The first paper money looked more like a note from one person to another than paper money used today. Money has had an interesting history from the days of shell money until today. Where were shells used as money in history?

A. 　In the Philippines.

B. 　 In China.

C. 　 In Africa.

D. 　 We don‘t know.

82.He has been so occupied with his work these days that he barely has time to( )his friends.

A. 　take on

B. 　 visit on

C. 　 visit with

D. 　 take after

128.It is so difficult to( )the bottom of the ocean because some parts are very deep.

A. 　express

B. 　 estimate

C. 　 explore

D. 　 explode