19.Wouldn＇t you rather your child ()to bed early?

43.The government should come up with a better solution to the problems caused by the high price of petrol.

45.()cleans the blackboard should be praised.

A. 　That

B. 　Who

C. 　The one who

D. 　The students who

1、近年来，随着科技发展，电子产品越来越多，学生的汉字书写能力大大降低。假定你是校书法协会的会长，为了让同学们重视书写，写一封倡议书，内容包括:1.减少对电子产品的依赖，多动手记笔记;2.养成练书法和写日记的习惯。

1. Passage Thirty-ThreeWe all know that DNA has the ability to identify individuals but， because it is inherited， there are also regions of the DNA strand which can relate an individual to his or her family (immediate and extended)， tribal group and even an entire population.Molecular Genealogy (宗谱学)can use this unique identification provided by the genetic markers to link people together into family trees.Pedigrees (家谱)based on such genetic markers can mean a breakthrough for family trees where information is incomplete or missing due to adoption， illegitimacy or lack of records.There are many communities and populations which have lost precious records due to tragic events such as the fire in the Irish courts during Civil War in 1921 or American slaves for whom many records were never kept in the first place.The main objective of the Molecular Genealogy Research Group is to build a database containing over 100，000 DNA samples from individuals all over the world.These individuals will have provided a pedigree chart of at least four generations and a small blood sample.Once the database has enough samples to represent the world genetic make-up， it will eventually help in solving many issues regarding genealogies that could not be done by relying only on traditional written records.Theoretically， any individual will someday be able to trace his or her family origins through this database.In the meantime， as the database is being created， molecular genealogy can already verify possible or suspected relationships between individuals.“For example， if two men sharing the same last name believe that they are related， but no written record proves this relationship， we can verify this possibility by collecting a sample of DNA from both and looking for common markers (in this case we can look primarily at the Y chromosome (染色体)，” explains Ugo Perego， a member of the BYU Molecular Genealogy research team.People in a large area may possess the same DNA thread because ().

36.My teacher was made ()his teaching because of poor health.

A. 　giving up

B. 　to give up

C. 　given up

D. 　give up

41.Important people don’t often have much free time as their work ()all their time.

A. 　takes away

B. 　takes up

C. 　takes over

D. 　takes in

17.This crop has similar qualities to the previous one， ()both wind-resistant and adapted to the same type of soil.

A. 　being

B. 　been

C. 　to be

D. 　having been

2. Passage Thirty-FiveTelevision has changed the lifestyle of people in every industrialized country in the world.In the United States， where sociologists have studied the effects， some interesting observations have been made.Television， although not essential， has become an important part of most people’s lives.It alters people’s ways of seeing the world; in many ways， it supports and sustains (维持)modern life.Television has become a baby-sitter， an introducer of conversations， the major transmitter of culture and a keeper of tradition.Yet when what can be seen on TV in one day is critically analyzed， it becomes evident that television is not a teacher but a sustainer; the poor quality of programming does not elevate (提高)people into greater understanding， but rather maintains and encourages the life as it exists.The primary reason for the lack of quality in American television is related to both the history of TV programming development and the economics of TV.Television in America began with the radio.Radio companies and their sponsors first experimented with television.Therefore， the close relationship which the advertisers had with radio programs became the system for American TV.Sponsors not only paid money for time within programs， but many actually produced the programs.Thus， in American society， television is primarily concerned with reflecting and attracting society rather than experimenting with new ideas.Advertisers want to attract the largest viewing audience possible.To do so requires that the programs be entertaining rather than educational， attractive rather than challenging.Television in America today remains， to a large extent， with the same organization and standards as it had thirty years ago.The hope for further development and true achievement toward improving society will require a change in the entire system.The second paragraph is mainly about ().

50.This project is said ( )right now and so far everything is going on quite smoothly.

A. 　to have carried out

B. 　having been carried out

C. 　to have been carried out

D. 　to be being carried out

43.So instructive ()the student wanted to see it again.

A. 　was the film

B. 　it was the film

C. 　the film was

D. 　the film it was