从分子的角度分析，能体现分子在不断运动的是（ ） A．固体不易被压缩 B．花香四

有关高钾血症的描述，下列错误的是（）

A.一般无特异症状

B.可有四肢软弱

C.高钾血症严重时可引起心搏骤停

D.血钾浓度>5.5mmol/L

E.血钾浓度>7mmol/L，心电图出现U波

下列切开法的注意事项中，错误的是（）

A.在关节部位，宜谨慎开刀，切口应越过关节

B.血瘤、岩肿不宜切开

C.患者体弱应先内服调补药，然后开刀

D.面部疔疮，尤其是口鼻部位，忌早期开刀

E.进刀时，刀头要求向上挑取，不宜向下割划

下列关于简易程序转为普通程序的做法，正确的是( )。

A．人民法院在适用简易程序审理某甲盗窃一案过程中，发现某甲的行为不构成犯罪，从而转为普通程序审理

B．对简易程序转为普通程序的，以前经过的诉讼过程仍然有效，应接着审理

C．转为普通程序重新审理的公诉案件，人民法院可以在三日内将全案卷宗和证据材料退回人民检察院

D．转为普通程序审理的案件，审理期限应当从决定转为普通程序之日起计算

Some spiders hunt on the ground, others build webs to trap their food, but the grass water spider catches its prey by running along the surface of the water.

This special water spider lives on the grassy banks of streams where mosquitoes, damsel flies and other insects come to feed and breed.

Although it is one of the largest spiders in New Zealand, it has an unusual ability. It doesn’t disturb the water as it waits for its meal, and there is barely a ripple when it skims across the surface at lightning speed to catch its prey.

Grass water spiders deal swiftly with larger insects like damsel flies by pulling their heads under the water and holding them there until they drown.

After a meal, the grass water spider spends up to half an hour grooming itself. It wipes its eight eyes, brushes its antennae, and takes special care to clean the hairs on its body.

It is the hairs that trap tiny bubbles of air so that the spider can run down a blade of grass and stay underwater for up to an hour when it is frightened. The hairs also keep the spider dry, even underwater.

It is only when the female spider is caring for the young that she does not hunt on the water. After mating, she produces a large egg sac, which she carries around for five weeks. Once the eggs start to hatch, she attaches the sac to some blades of grass or a thistle. She then tears the sac open and releases the tiny spiders into the nursery web.

The writer describes the special spider as“special”because（）

A. it walks on water

B. it has eight eyes

C. of its hairy appearance

D. of the way it produces its young

天坛是明清皇帝用来祭天、祈谷的地方，其建筑“反映出天地之间的关系”，“还体现出帝王将相在这一关系中所起的独特作用”。最早把天、地、人的关系上升到理论并被统治者所接受的儒家人物是（）

A.孔子

B.孟子

C.董仲舒

D.黄宗羲