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问题 选择题

某企业新建工厂预选了下列四处地点,分析下表后回答下列问题:

工厂地点甲乙丙丁
成本分析集货数0468
加工费5555
工资1216109
小题1:从经济效益角度考虑,该工厂最好建在

A．甲

B．乙

C．丙

D．丁小题2:企业吸引了外资,若按上表的成本核算,下列工业部门最适宜在乙地建厂发展的是

A．有色金属冶炼厂

B．高档时装加工厂

C．瓶装饮料生产厂

D．计算机软件开发厂

答案

小题1:A 小题2:D

小题1:从经济效益角度考虑，根据表中成本分析统计可知，在甲建工厂成本最低。

小题2:从表中信息可知，乙地工资成本最高，结合选择项可知最适宜在乙地建厂发展的是计算机软件开发厂。

解答题

方程37-2x=15的解是x=11．______．
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单项选择题

Flying over a desert area in an airplane, two scientists looked down with trained eyes at trees and bushes. After an hour’s flight one of the scientists wrote in his book, "Look here for probable metal. " Scientists in another airplane, flying over a mountain area, sent a message to other scientists on the ground, "Gold possible. " Walking across hilly ground, four scientists reported. "This ground should be searched for metal." From an airplane over a hilly wasteland a scientist sent back by radio one word: "Uranium."
None of the scientists had X-ray eyes: they had on magic powers of looking down below the earth’s surface, They were merely putting to use one of the newest methods of locating minerals in the ground, using trees and plants as signs that certain minerals may lie beneath the ground on which the trees and plants are growing.
This newest method of searching for minerals is based on the fact that minerals deep in the earth may affect the kind of bushes and trees that grow on the surface.
At Weston Bar Greek, a brook six thousand feet high in the mountains of British Columbia, Canada, a mineral search group gathered bags of tree seeds. Boxes were filled with small branches from the trees. Roots were dug and put into boxes. Each bag and box was carefully marked. In a scientific laboratory the parts of the forest trees were burned to ashes and tested. Each small part was examined to learn whether there were minerals in it.
Study of the roots, branches, and seeds showed no silver. But there were small amounts of gold in the roots and a little less gold in the branches and seeds. The seeds growing nearest to the tree trunk had more gold than those growing on the ends of the branches.

Which is the best title suggested below

A．Scientists Searching for Metals with Special Power.
B．New Methods of Searching for Minerals.
C．Gold Could Be Found by Trees and Plants.
D．A New Method of Searching for Minerals—Using Trees and Plants.
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