世界各国的园林植物都是直接或间接由（）引种驯化并改良而来。

据了解，个体皮鞋店销售皮鞋只要高出进价的20%便可盈利，但老板们常以高出进价的50%-100%标价，如果你准备买一双标价400元的皮鞋，在保证老板盈利，而你又不吃亏的情况下，最少还价多少元？最多可还价多少元？

学校组织同学到博物馆参观，小明因事没有与同学们同时出发，于是准备在学校门口搭乘出租车赶去与同学们会合，出租车的收费标准是：不超过3公里的付费6元，超过3公里的，每公里加收1.2元，不足1公里的按1公里计算。请你回答下列问题：

（1）小明乘车1.8公里，应付费__________元；

（2）小明乘车3.8公里，应付费__________元；

（3）小明身上仅有10元钱，乘出租车到距学校6.2公里远的博物馆的车费够不够？请说明理由

Yvonne, Miriam and Dorcas Mpofu are part of a group of shareholders in a mining company called ChromeTech Ltd. Together they jointly own 52% of the company’s equity. Due to an upsurge in the price of chrome on world markets, the share price has risen from US$2 per share in January 2009 to US$20 per share by the end of April 2009. The company is one of the best performers amongst the listed companies on the Zimbabwe Stock Exchange. It has a board of directors of nine people drawn from various professional disciplines including Mr Wiseman the chairman of the board, a certifi ed accountant by profession. The deputy chair Mr Knowledge is a lawyer in private practice. The company has not declared a dividend since 2007 and in spite of the fact that the most recent fi nancial year-end results show that the company is in a very healthy fi nancial position. The board has recommended that no dividend should be paid as yet and that the after tax profi ts of the company should be used for purposes of acquiring more sophisticated mining equipment from Australia and the UK. At the same time, it has been alleged that the chairman and deputy have been involved in illegal activities. No criminal charges (let alone a conviction) have been laid against the two. The three shareholders, Yvonne, Miriam and Dorcas feel a deep sense of grievance on issues pertaining to the non-declaration of a dividend. Equally, they would want to convene an emergency meeting to remove the chairman and his deputy from the board over their alleged illicit activities. The chairman and his deputy’s terms of offi ce have another two years to run.Required:In relation to company law,

(b) Explain the procedure relating to the removal of directors before the expiry of their service agreement. (5 marks)

高等职业技术师范学院（大学）、科技师范学院、工程技术师范学院的办学特色是（）相结合。

A.实践性

B.理论性

C.技术性

D.师范性

读秀丽的黄果树景观图，回答题。

构成该景观的主体要素属于的圈层是（）

A.生物圈

B.水圈

C.岩石圈

D.地壳