房地产经济宏观调控体系的中枢是（） A.经济信息系统 B.经济预测系统 C.经济决策

（选修3）《国家和国际组织常识》2010年3月4日上午9时，第十一届全国人民代表大会第三次会议开幕。会议的第一项议程是国务院 * * 温 * * 作政府工作报告。温 * * * * 指出: 促进民族团结，实现共同进步，是中 * * 的生命、力量和希望所在。我们要旗帜鲜明地反对民族分裂，维护祖国统一，让少数民族和民族地区各族群众充分感受到祖国大家庭的温暖。

（1）结合材料说明人民代表大会制度是我国的根本政治制度。（8分）

（2）我国人民代表大会制度是怎样维护国家统一和民族团结的？（4分）

Should we care if over 150 known species of animals have (91) from the earth in the last fifty years Should we be concerned that there are (92) thousands of species whose very existence is (93) endangered—largely because of our activities (94) , after all, is the natural end of populations. Species are born, then (95) , and then die. Some live a (96) time, perhaps millions of years; some die more quickly. We have (97) the extinction of many species we know about, and we have undoubtedly sealed the (98) of others. In fact, there are undoubtedly many other species that have lived among us during our time on earth, but that have disappeared as a (n) (99) of our activities without our ever having known they existed.
It is hard to explain the rationale of many of us who are concerned about such matters. I have never seen a sea whale, (100) I don’t want them to become extinct. Moreover, I felt this way long before I understood anything about how they might be an important part of an ecosystem. Possibly such feelings merely reflect the cultural attitude that it is "nice" to wish other living things well; thus, the attitude is (101) . I feel nice.
There are, of course, more rational reasons for (102) the extermination of any species. For one thing, the kind of attitude that encourages or sanctions the destruction of other species is a threat (103) our own wellbeing. If such an attitude exists, we ourselves might (104) victim to it. living things (including us) might be expected to fare better where there is (105) for life. The extinction of other species could also threaten us (106) by simplifying the system of which we are a part or by destroying parts of the ecosystem (107) which we directly rely. For example, if we continue to poison the oceans (108) we are willing to believe only a few bottom dwellers are affected, we might (109) overstep some critical threshold and trigger the wholesale death of plankton, thus finding ourselves without a major (110) of the world’s food and with our oxygen supplies dwindling.

A．mourning

B．crying

C．weeping

D．wailing

在Windows XP中，不能用作文件名的是 (37) 。

A．123$4．%A#
B．123&4.exe
C．gz；shzh; zhh@gd
D．df/Program File.Doc

下列关于利润表项目之间关系的等式中，正确的是（）。

A.主营业务利润=主营业务收入一主营业务税金及附加

B.营业利润=主营业务利润+其他业务利润

C.利润总额=营业利润一营业外支出

D.净利润=利润总额一所得税

腻子的主要构成成分有（）溶剂及水等。

A.化学物质

B.填充剂

C.催化剂

D.着色颜料

E.固化剂