B

　　　 Home schooling offers other unforeseen advantages as well. One of these might be more available time. Home schooling can be an effective way to teach. The time you have during the day can be used resourcefully, in this manner reducing the overall time that the student in fact spends at school.

　　　 Home schooling allows the parent to develop into the main adviser and foundation of guidance for a child. Since a home schooled child relates to the parent a lot more, the child and the parent can form a tighter connection than they might otherwise form. This connection could be the basis of a higher degree of trust between the child and the parent where the child is more apt to come to the parent for help and direction as an alternative of turning somewhere else.

　　　 Home schooling can be an instrument for a special case where a child may have been a target of extreme harassment(侵扰)at a standard public school. School harassment is a major problem at some schools and is a hard problem to put an end to. The home schooling of a child mistreated in this way offers the child a way to re-focus on learning and makes the child be able to receive the close parental leadership.

　　　 It is a proven fact that home schooled students do well when it comes to college preparation. In general, home schooled students have performed equally to or better than public schooled students on SAT assessments. In addition, it is a fact that home schooled students can do as well as their public schooled peers in college.

　　　 Home schooling is not for every person. Each parent should cautiously assess whether home schooling will benefit their particular circumstances or not. There are many considerations to be made when choosing home schooling, but for many, home schooling has been a preference that has proven to be very beneficial to the student’s exceptional education.

45. The passage mainly talks about _______.

　　　 A. how to carry out home schooling

　　　 B. the advantages of home schooling

　　　 C. home schooling and standard public schooling

　　　 D. parents’ preference for home schooling

46. A student trapped in school harassment may not _______.

　　　 A. focus his / her attention on learning

　　　 B. get along well with others

　　　 C. form a good habit of learning

　　　 D. form a tight connection with his / her teacher

47. The college and SAT assessments are referred in this passage to prove that _______.

　　　 A. the final results of home schooling are doubtful

　　　　　　 　　　 B. public schooled students do better than home schooled

students

　　　 C. home schooling is equal to or better than public schooling

　　　 D. home schooling may not be beneficial to every person

48. Which of the following may the writer agree with ?

　　　 A. Home schooling has more advantages than disadvantages

　　　 B. Parents should devote their time to home schooling

　　　 C. Home schooling is usually not as effective as expected

　　　 D. Many factors should be considered before choosing home

schooling

A

Science Daily -------- Dutch ecologist Roxina Soler and her colleagues have discovered that subterranean(地下的)and above ground herbivorous(食草的)insects can communicate with each other by using plants as telephones. Subterranean insects issue chemical warning signals through the leaves of the plant. Thus, aboveground insects are warned that the plant is already “ occupied”.

　　　　　　　 Aboveground, leaf-eating insects prefer plants that have not yet been occupied by subterranean root-eating insects. Subterranean insects send out chemical signals through the leaves of the plant, which warn the aboveground insects about their presence. This message makes it possible for two different kinds of insects to avoid each other, so that they do not compete for the same plant.

　　　 In recent years it has been discovered that different types of aboveground insects develop slowly if they feed on plants that also have subterranean residents and vice versa(反之亦然). It seems that a system has developed through natural selection, which helps the subterranean and aboveground insects to communicate with each other. This avoids unnecessary competition.

　　　 Through the “green telephone lines”, subterranean insects can also communicate with a third party, namely the natural enemy of caterpillars(毛虫). Parasitic wasps(寄生的黄蜂)lay their eggs inside aboveground insects. The wasps also benefit from the signals sent by the leaves, as these help them find more insects for their eggs. The communication between subterranean and aboveground insects has only been studied in a few systems. It is still not clear how widespread this phenomenon is.

　　　 This research was carried out at the Netherlands Institute for Ecology by Roxina Soler, Jeffrey Harvey, Martijn Bezemer, Wim van der Putten and Louise Vet. The phD project, in which this study was carried out, was funded by the Free Competition of NOW Earth and Life Sciences.

41. After finding a plant occupied by root-eating insects, aboveground insects will usually ________.

　　　　 A. send out warning signals

　　　　 B. choose to leave the plant

　　　　 C. fight with the root-eating insects

　　　　 D. compete with them for the same plant

42. Aboveground insects will develop more quickly if their food plants _______.

　　　　 A. have more green leaves

　　　　 B. get more water and sunlight

　　　　 C. are often visited by parasitic wasps

　　　　 D. are not occupied by root-eating insects

43. The underlined part “a third party” in Paragraph 4 refers to ______.

　　　　 A. caterpillars　　　　　　　　　　 B. root-eating insects　　　

　　　　 C. parasitic wasps　　　　　　 D. aboveground insects

44. What is the best title for the passage ?

　　　　 A. Insects use plants as “telephones”

　　　　 B. How do animals avoid competition

　　　　 C. The living habit of different insects

　　　　 D. Communication between different insects

20. ----- Did you go to see the football match in the stadium ?

　　 ----- _____, but my brother called on me.

　　　 A. I’d like to　　　　　　　　　　　　　　　　　 B. I’d like to have　

C. I wouldn’t like it　　　　　　　　　　　 D. I like to

19. It is reported that China has created the first man-made sun in the world recently, ______ ?

　　　 A. isn’t it　　　　　　 B. is it　　　　　　　　 C. hasn’t it　　　　　　　　　　 D. has it

18. ----- Has Mary finished writing her article ?

　　 ----- No, and it _____ before class was over.

　　　 A. should be finished　　　　　　　　 B. should finish

　　　 C. should have finished　　　　　　 D. ought to have been finished

17. I really _____ thank you enough. It’s been an amazing day.

　　　 A. needn’t　　　　 B. should　　　　　 C. must　　　　　　　　　　 D. cannot

16. The computer program is a puzzle to me. The more I think of it, the more questions I think of _____.

　　　 A. ask　　　　　　　　 B. asked　　　　　 C. being asked　　　 D. to ask

15. Realizing I would be late , I quickly dressed my son and _____ my bag, went to work.

　　　 A. carried　　　　 B. carrying　　　 C. to carry　　　　　　　 D. having carried