问题 选择题

为了提高成活率,园艺工人移栽树木时,根部总是带一个土坨。其原因是

A.保护幼根和根毛

B.降低蒸腾作用

C.抑制根吸收水分

D.降低光合作用

答案

答案:A

题目分析:植物吸收水和无机盐的主要器官是根.根适于吸水的特点是根尖成熟区生有大量的根毛,大大增加了根与土壤中水接触的面积,有利于吸水.而且根尖成熟区及其内部一部分细胞分化形成导管,能输导水分和无机盐.因此植物根吸收水的主要部位是根尖的成熟区.移栽茄子秧、黄瓜秧时,总是保留根部的土坨,目的是为了保护幼根和根毛,提高植物的吸水能力,从而提高移栽的成活率.可见A符合题意.故选A.

完形填空

第一节   完形填空(共10小题;每小题2分,满分20分)

阅读下面短文,掌握其大意,然后从21—30各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

In Mr. Allen’ class, which is a high school of the New Jersey, all the students have to “get married”. However, the wedding  21       sometimes become so noisy -- Even the two students getting married often begin to laugh -- that the loud laughter drowns out the  22       of the “minister”.

The teacher, Mr. Allen, wants young students to understand that there are many changes that must take place after marrying and believes that the  23       for these psychological and financial changes should be understood before people marry.

Mr. Allen not only introduces his students to main problems faced in marriage such as illness or being out of work, but also  24        them to the difficult and particular problems they will face every day. He wants to introduce young people to all the worries that can bring the  25        point to a marriage. He even makes his students know the problem of  26         and the fact that divorced men must pay child support money for their children and sometimes pay their wives every month.

It has been not easy for some students to see the problems that a  27      couple often faces.  28      they took the course, they had not worried much about the problems of marriage. However, both students and parents feel that Mr. Allen’ s course is  29    and have favored the course publicly. Their statements and letters supporting the class have asked the school to  30       the course again.

21. A. conferences         B. competitions             C. ceremonies           D. celebrations

22. A. whisper                     B. announcement           C. scream                        D. voice

23. A. possibility           B. responsibility            C. need                        D. benefit

24. A. exposes               B. explains                   C. extends                    D. exhausts

25. A. uniting               B. burning                    C. breaking                   D. freezing

26. A. wedding             B. divorce                    C. participation             D. division

27. A. divorced             B. complained           C. quarreled                  D. married

28. A. Until                  B. After                        C. If                               D. Because

29. A. acceptable           B. flexible                    C. valuable                   D. unbelievable

30. A. afford                 B. offer                        C. establish                   D. affect

选择题

阅读下列材料:

【材料一】第一条:第一款 本宪法所制定的立法权,属合众国国会,国会由一个参议院和一个众议院组成。第七款 ……经众议院和参议院通过的法案,在正式成为法律之前,须呈递合众国总统,由总统审批。倘若……该议院的议员以三分之二仍然通过法案,该法案成为法案。第二条:第一款 行 * * 力赋予总统,总统任期四年……第二款  总统有权缔约和约,但须争取参议院的同意,并须出席的参议员中三分之二的人赞成,他有权提名,并于取得参议院的同意后,任命大使.最高法院的法官……第三条:第一款 合众国的司法权属于一个最高法院以及由国会随时下令设立的低级法院,最高法院和低级法院,如果尽忠职守,应继续任职……--美国《1787年宪法》

【材料二】中华民国之主权,属于国民全体,中华民国人民一律平等,无种族、阶级、宗教之区别。中华民国以参议院,临时大总统、国务员、法院行使其统治权。中华民国之立法权,以参议员行之。……临时大总统、副总统由参议院选举之。临时大总统代表临时政府,总揽政务。……国务员辅佐临时大总统,负其责任,国务员于临时大总统提出法律案,公布法律,及发布命令时,须副署之。法院依据法律审判民事诉讼及刑事诉讼。参议院对于临时大总统,认为有谋叛行为时,得以议员四分之三以上之出席,出席员三分之二以上之可弹劾之。─1912年《中华民国临时约法》

请结合所学知识回答:

(1) 美国宪法是在什么情况下制定的?

(2) 请指出材料中两部宪法所反映的共同原则,并根据材料一中的美国宪法的内容来具体说明这种原则的内容。

(3) 两部宪法关于总统的权力的规定有何不同?请根据中国当时的情况分析为什么会有这种不同?