切割样

某小组的同学在观察如图时阐述了各自的观点，你不认同的是（　　）

A．图中杠杆不平衡，该生态系统处于不平衡状态

B．在生态系统中草的数量是最多的

C．此生态系统的一条食物链是：草→鼠→蛇

D．如果人们大量捕杀蛇，鼠的数量会先增加后减少

图2—24所示为某县级城市用地发展布局及省道改线的两个规划方案。值得注意的是该市西距人口65万的地级市40km，东距5万人口的县城30km。用地条件较好，西部为山丘坡地，东部较为平坦，水资源充沛，虽现状人口不足10万，但近些年国家铁路通车后，社会经济快速发展，省域城镇体系规划中已确定其为重点发展城市。

试评析哪一个规划方案对城市今后的发展更为有利为什么(注：不考虑人口规模预测及各项用地比例)

简述兔甲状旁腺的解剖学形态位置。

Even plants can run a fever, especially when they are under attack by insects or disease. But (1) humans, plants can have their temperature (2) from 3,000 feet away—straight up. A decade ago, (3) the infrared scanning technology developed for military purpose and other satellites, physicist Stephen Paley (4) a quick way to take the temperature of crops to determine (5) ones are under stress. The goal was to let farmer (6) target pesticide spraying (7) rain poison on a whole field, which (8) include plants that don’t have the pest problem.

Even better, Paley’s Remote Scanning Services Company could detect crop problem before they became (9) to the eye. Mounted on a plane flown at 3,000 feet (10) , an infrared scanner measured the heat emitted by crops. The data were (11) into a color-coded map showing (12) plants were running "fevers". Farmers could then spot spray, using 50 to 70 percent less pesticide than they (13) would.

The bad news is that Paley’s company closed down in 1984, after only three years. Farmers (14) the new technology and long-term backers were hard (15) . But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to (16) into operation. Agriculture experts have no doubt about the technology works. "This technique can be used (17) 75 percent of agricultural land in the United States," says George Oerther of Texas A＆M. Ray Jackson, who recently retired from the Department of Agriculture, thinks (18) infrared crop scanning could be adopted by the end of the decade. But (19) Paley finds the financial backing (20) he failed to obtain 10 years ago.

3（）

A.adopted

B.adopting

C.adapted

D.adapting

沉积铁矿床一般产于海侵岩（）的岩性段。

A.细砂岩-粉砂岩-页岩

B.页岩-硅质岩-碳酸盐岩

C.粗砂岩-细砂岩