问题 单项选择题

Our ape-men forefathers had no obvious natural weapons in the struggle for (1) in the open. They had neither the powerful teeth nor the p claws of the big cats. They could not (2) with the bear, whose strength, speed and claws (3) an impressive " small fire" weaponry. They could not even defend themselves (4) running swiftly like the horses, zebras or small animals. If the ape-men had attempted to compete on those terms in the open, they would have been (5) to failure and extinction. But they were (6) with enormous concealed advantages of a kind not possessed by any of their competitors.

In the search (7) the pickings of the forest, the ape-men had (8) efficient stereoscopic vision and a sense of color that the animals of the grasslands did not (9) . The ability to see clearly at close range permitted the ape-men to study practical problems in a way that lay far (10) the reach of the original inhabitants of the grassland. Good long-distance sight was (11) another matter. Lack of long-distance vision had not been a problem for forest-dwelling apes and monkeys because the (12) the viewpoint, the greater the range of sight-so (13) they had had to do was climb a tree. Out in the open, however, this simple solution was not (14) . Climbing a hill would have helped, but in many places the ground was flat. The ape-men (15) the only possible solution. They reared up as high as possible on their hind limbs and began to walk (16) . This vital change of physical position brought about considerable disadvantages. It was extremely unstable and it meant that the already slow ape-men became (17) still. (18) , they persevered and their bone structure gradually became (19) to the new, unstable position that (20) them the name Homo erectus, upright man.

15()

A.chose

B.adopted

C.accepted

D.took

答案

参考答案:B

解析:

choose意为“选择,挑选”;adopt意为“采用,采纳”;accept意为“接受”;take 意为“实施,采取”。这里是说“猿人采取了唯一可行的方案”,故答案选B。

单项选择题
单项选择题


(各备选选项中,至少有一个符合题意)

某集成电路公司拟建设一条生产线,进行集成电路后工序生产。从硅圆片贴膜开始,经划片、粘片、键合、封装、去飞片、镀锡、切筋、成型、测试、老化、打印、包装等一系列集成电路后工序。
废气来源:①装配室和塑封室。一部分引线框架需使用硝酸、硫酸及纯水进行清洗,因此会产生少量硝酸雾及硫酸雾。②镀锡室。镀件是集成电路引线框架脚,在镀锡及清洗过程中产生少量硝酸雾及硫酸雾废气。③标记、打印室。在使用高纯度乙醇擦拭打印痕迹时,会产生少量乙醇挥发废气。
废气产生量及治理措施:采用废气洗涤塔,将生产过程中产生的含有硝酸雾、硫酸雾的废气引至洗涤塔用碱液喷淋。治理后硫酸雾排放速率为2.0kg/h,硝酸雾排放速率为2.0kg/h。
生产工艺废水有:①镀锡废水。来自镀锡室,含硫酸、硝酸、Pb、Cu、Ni、 Fe、Sn。②划片废水。来自划片清洗工序,含有残余硝酸,呈弱酸性,有少量悬浮物。③酸碱废水。主要是纯水站离子交换树脂的再生废水,含有盐酸或氢氧化钠。④废气洗涤废水。来源于废气洗涤塔,即电镀工艺废气产生的酸性废气通过洗涤塔,用碱性溶液对其进行洗涤处理后产生的废水。主要含氢氧化钠和盐类。总排水量670m3/d,其中包括厂区生活污水。
废水治理措施:拟建一座废水处理站,对生产车间、纯水站及废气洗涤塔所排废水进行集中处理,处理后的生产废水与厂区生活污水汇合后经厂区总排口排入市政污水管线。
该项目拟建于工业开发区,污水经市政管线排入城市集中污水处理厂,由市政热力集中供热。

该项目水环境影响评价等级为( )。

A.一级

B.二级

C.三级

D.进行简要分析