某年，由于气候原因，大豆减产，实际产量Q小于均衡产量Q，于是价格由P上升到P。由于商品价格较高，次年，生产者把产量增加到Q，大于均衡产量Q，价格又下跌到P，低于均衡价格P。价格降低后，农民又减少了种植面积，产量减至Q，小于均衡产量Q，价格上升为P，高于均衡价格P。由于价格的提高，产量又增至Q，高于均衡产量Q，价格又下降为P，低于均衡价格P。如此循环下去，得出下面图形： 根据材料回答下列问题：

［多选]在实际运用中，关于该模型E点的描述正确的是( )。

A:实际产量和实际价格的波动幅度越来越小，最后回复到E点 B:E所代表的均衡状态是稳定的 C:实际产量和价格波动幅度将越来越大，偏离均衡点E越来越远 D:E点所代表的均衡状态是不稳定的

某男性患者，72岁，缺失，余牙正常。设计RPI卡环，用钴铬合金铸造腭板连接

RPI卡环中，R代表的是

A:近中支托 B:远中支托 C:近中邻面板 D:远中邻面板 E:杆式卡环

某女性患者，产后癫痫、剧烈头痛1d，意识障碍3h。MRI显示如下图。

关于MRI表现的描述，正确的是

A:双侧额叶、顶叶皮层肿胀，脑沟变浅 B:病变同时累及皮层及皮层下白质 C:上矢状窦流空信号消失 D:病变占位效应明显 E:病变信号均匀 F:病变邻近脑膜增厚

某女性患者，产后癫痫、剧烈头痛1d，意识障碍3h。MRI显示如下图。

可能的诊断是

A:静脉窦闭塞 B:高灌注脑病 C:脑梗死 D:脑炎 E:脑水肿 F:脑出血

某女性患者，产后癫痫、剧烈头痛1d，意识障碍3h。MRI显示如下图。

为进一步明确诊诊断，下一步的检查方法首选

A:MRV B:MR增强 C:CT D:CT增强 E:CT灌注 F:MRS

某女性患者，产后癫痫、剧烈头痛1d，意识障碍3h。MRI显示如下图。

病变诊断为 ( 提示 MRV显示如下图。)

A:静脉窦闭塞 B:高灌注脑病 C:脑梗死 D:脑炎 E:脑水肿 F:脑出血

某女性患者，产后癫痫、剧烈头痛1d，意识障碍3h。MRI显示如下图。

静脉窦闭塞与高灌注脑病的鉴别要点包括

A:高灌注脑病表现为顶、枕叶皮层下弓形纤维的水肿 B:高灌注脑病DWI和ADC均表现为高信号，提示病变为血管源性水肿 C:高灌注脑病经治疗后很快恢复 D:静脉窦闭塞表现为静脉的流空信号消失，相应引流区域水肿、出血 E:MRV可对两者做出鉴别诊断 F:静脉窦闭塞脑实质的并发症主要位于闭塞部位的引流区

某女性患者，产后癫痫、剧烈头痛1d，意识障碍3h。MRI显示如下图。

有关静脉窦闭塞的影像学表现，正确的是

A:平扫CT或增强MR显示空三角征 B:好发于上矢状窦，其次为横窦、乙状窦 C:脑组织的病理改变与静脉窦和脑静脉的阻塞程度以及是否建立有效的侧支循环无关 D:50%的患者合并静脉性梗死 E:怀疑静脉窦闭塞，首先行MRV检查 F:静脉内充盈缺损，均提示静脉窦闭塞 G:乙状窦为最常见的先天性发育不良的位置

Questions from 36 to 40 are based on the following passage: Negotiations work wonders. This is particularly so in international business since it is mostly through negotiations that exporters and importers bridge their differences and reach a fair and mutually satisfactory deal. By presenting a more comprehensive negotiating package in a well planned and organized manner, exporters should be able to improve the effectiveness of their business discussions and in the long term the profitability of their export operations. To avoid being confronted by costly demands, an exporter should try to determine the buyer’s real interest in the products from the outset. This can be ascertained through appropriate questions but must also be based on research and other preparations before the negotiations. Only then can a suitable counter-proposal be presented. To achieve a favorable outcome from the negotiations, an exporter should draw up a plan of action beforehand, which addresses a few key issues. Experienced negotiators consider that as much as 80% of their overall time devoted to negotiations should go to such preparations. The preliminary work should be aimed at obtaining relevant information on the target market and the buyers of the products. It should also include developing counter-proposals if objections are raised on any of the exporter’s opening negotiating points. The preparations should thus involve formulating the negotiating strategy and tactics. In international marketing negotiations, it is advisable for small and medium-sized exporters not just to limit their discussions to pricing issues, although pricing is a key factor in any business transaction, exporters should give more attention to the full range of marketing factors. They should stress the strengths of their firms and products and match them with the perceived needs of the buyers. Once these issues have been covered, they can consider the question of price and are able to develop a profitable business.

A:importers and exporters can build a bridge together B:they do help solve problems and get more understanding for each other C:they bring satisfactory deal every time D:the gap between importers and exporters can be fairly filled in every instance

Questions from 31 to 35 are based on the following passage: Negotiations work wonders. This is particularly so in international business since it is mostly through negotiations that exporters and importers bridge their differences and reach a fair and mutually satisfactory deal. By presenting a more comprehensive negotiating package in a well planned and organized manner, exporters should be able to improve the effectiveness of their business discussions and in the long term the profitability of their export operations. To avoid being confronted by costly demands, an exporter should try to determine the buyer’s real interest in the products from the outset. This can be ascertained through appropriate questions but must also be based on research and other preparations before the negotiations. Only then can a suitable counter-proposal be presented. To achieve a favorable outcome from the negotiations, an exporter should draw up a plan of action beforehand, which addresses a few key issues. Experienced negotiators consider that as much as 80% of their overall time devoted to negotiations should go to such preparations. The preliminary work should be aimed at obtaining relevant information on the target market and the buyers of the products. It should also include developing counter-proposals if objections are raised on any of the exporter’s opening negotiating points. The preparations should thus involve formulating the negotiating strategy and tactics. In international marketing negotiations, it is advisable for small and medium-sized exporters not just to limit their discussions to pricing issues, although pricing is a key factor in any business transaction, exporters should give more attention to the full range of marketing factors. They should stress the strengths of their firms and products and match them with the perceived needs of the buyers. Once these issues have been covered, they can consider the question of price and are able to develop a profitable business. Negotiations work wonders because（ ）.

A:importers and exporters can build a bridge together B:they do help solve problems and get more understanding for each other C:they bring satisfactory deal every time D:the gap between importers and exporters can be fairly filled in every instance