内幕交易是指证券交易内幕信息的知情人和非法获取内幕信息的人利用内幕信息从事证券交易活

主生产计划的相对冻结虽然使生产成本得以减少，但也同时减少了响应市场变化的柔性，而这同样是要发生成本的。因此，还需要考虑二者间的平衡。（）

患儿，男性，6岁。腹痛半天，解稀便一次，发热6小时，昏迷3小时入院。入院前6小时（14：00）突然高热，体温39．5℃，无咳嗽流涕，无腹痛腹泻，无呕吐。16：50左右全身抽搐，四肢僵硬，双眼向上凝视，口吐白沫，约持续3～4分钟。17：00许又相继抽搐2次，约持续3～5分钟。19：00许患儿进入昏迷状态，呼之不应。就医某院，诊断“乙型脑炎”，肌肉注射地西泮5mg后转来。查体：T39．2℃，P142次／分，不规则，BP12．1／7．4kPa（90／56mmHg）。昏迷状态，呼之不应，面色灰白，口唇发绀，四肢末梢冰冷。表浅淋巴结未触及肿大。牙关紧咬，口腔无法检查。颈轻度抵抗。双肺叩诊清音，听诊无干湿性啰音。心浊音界不大，心率142次／分，听诊无杂音。腹平软，肝脾肋下未触及，肠鸣活跃，双下肢无水肿。四肢肌张力增加，双侧膝腱反射亢进，双侧巴宾斯基征阳性。辅助检查：血常规：WBC16．5×10⁹／L，N0．89，L0．10。其余未查。

为确诊应采用何种措施，进行的化验是（）

A.温盐水灌肠

B.查大便常规和细菌培养

C.血常规

D.腹腔穿刺

E.胃内灌入冰盐水

F.痰细菌培养

根据12×45=54．直接填空．

1.2×4.5=______

0.12×0.45=______

1.2×______=54

______×4.5=0.54．

As a result of pollution, Lake Erie, on the borders of the USA and Canada, is now without many living things.

Pollution in water is not simply a matter of “poisons” killing large numbers of fish overnight. Very often the effects of pollution are not noticed for many months or years because the first organisms (生物体) to be affected are either plants or plankton (浮游生物). These organisms are the food of fish, birds, and other creatures. When this food disappears, the fish and birds die too. In this way a whole food chain can be wiped out, and it is not until dead fish and water birds are seen at the river’s edge or on the sea shore that people realize what is happening.

Where do the substances which pollute water come from? There are two main sources, sewage(污水) and industrial waste. As more detergent (洗涤剂)is used in homes, more of it is finally put into our rivers, lakes and seas.  Detergents harm water birds by breaking down the natural substances which keep their feathers waterproof. Sewage itself, if not properly treated, makes the water dirty and prevents all forms of life in rivers and the sea from receiving the oxygen they need. Industrial waste is even more harmful since there are many highly poisonous materials in it, such as copper and lead.

So if we want to stop this pollution, the answer is simple. Sewage and industrial waste must be made clean before flowing into the water reservoirs. It may already be too late to save some rivers and lakes, but others can still be saved if the correct action is taken at once.

小题1:Pollution in water is noticed ________.

A．when the first organisms are affected

B．when many fish and birds die

C．when poisons are poured into water

D．As soon as the balance of nature is destroyed小题2:Living things die in a lake or river because there is no ________.

A．water

B．fish

C．Poison

D．oxygen小题3:The underlined word “waterproof” in the third paragraph means “         ”.

A．full of water

B．not allowing water to go through

C．covered with water

D．cleaned by water小题4:Which of the following things is /are harmful according to the passage？

A．Industrial waste and chemicals

B．Water in the river

C．Coal and wood

D．plastic

碘量法测定维生素C的含量时，每1ml碘滴定液（0.1mol/L）相当于维生素C的毫克数为（维生素C的分子量为176.13，与碘的摩尔比为1：2）（）

A.17.613mg

B.8.806mg

C.5.871mg

D.4.403mg

E.2.201mg