形成脑疝的根本条件是（） A.颅内肿瘤 B.颅脑损伤 C.剧烈头痛，频繁呕吐 D.腰

惊厥患儿在护理中应注意（）。

A．输液不宜过量或过快

B．不宜过量或过频使用镇静剂

C．不宜骤停脱水剂

D．不宜大声呼唤及摇晃搬动患儿

E．不宜吸入高浓度氧气

关于戴用覆盖义齿后的预防措施的描述，错误的是（）

A.对所有覆盖基牙，无论有无金属顶盖，均应彻底清洁其四周及牙龈，但不宜使用化学方法防龋

B.夜间摘下覆盖义齿

C.每日用0.1%～0.2%的氯己定溶液含漱

D.每日将义齿浸泡在0.2%的氯己定溶液中10～15分钟

E.定期复查

Scientists have long understood the key role that oceans play in controlling the Earth’s climate. Oceans cover 70 per cent of the surface of the globe and store a thousand times more heat than the atmosphere does. What’s newer is the understanding of how this key component(组成部分) of our climate system responds to global warming.

A brake on global warming—for now

One of the oceans’ most important climate functions is absorbing heat and carbon dioxide(CO2), one of the gases that causes global warming. Acting as something absorbing heat, the oceans have absorbed huge amounts of heat and CO2 in the last forty years.

Fujita explains, “the oceans are saving us from faster climate change—they are putting a brake on the climate system.”

“That’s the good news,” he adds. “The bad news is that the oceans only slow the atmospheric warming. Once the oceans come to balance with a greenhouse-gas warmed earth, the extreme heat will remain in the atmosphere and things will get much hotter.” But where and how the oceans release this slowly increased heat is uncertain. And as the ocean stores heat, fragile(脆弱的) underwater ecosystems are struggling.

The most recent scientific report from the Intergovernmental Panel on Climate Change(IPCC) also notes with concern that the ocean is acidifying(酸化) because of increased absorption of atmospheric CO2. and thus causing a threat to shell-forming species.  Sharp increase in CO2 levels will cause further acidification of the ocean.

Currents distributing heat

Another important role the oceans play is that of distributor(散布者). Oceans deliver heat and life-sustaining nutrition around the globe. Just as blood tube bring oxygen and nutrition to cells in the human body, the ocean’s currents carry oxygen, nutrients and heat throughout the Earth. The ocean distributes 25 to 50 per cent of energy the planet receives from the sun. For example, the Gulf Stream carries heat across the Atlantic. This warm current gives northwestern European a milder climate that it would normally have so far north. A change to the ocean’s circulation patterns could throw Europe into a colder period, even as the rest of the world is experiencing warmer temperatures.

小题1: We can infer from the passage that _______.

A．the oceans cause global warming

B．the oceans stop global warming

C．the oceans release nutrients and heat

D．the ocean ecosystems face more dangers小题2: From the passage we can learn that ocean’s currents _______.

1. produce oxygen and nutrients around     
2. absorb 25-50% of the energy from the sun
3. distribute the atmosphere hotter        

D.  change the ocean’s circulation patterns

小题3: Which of the following are the results of the ocean absorbing heat and CO2?

a. It causes further acidification.        

b. It makes the atmosphere hotter.

c. It balances the oceans with a green-house gas. 

d. It affects shell-forming species.  

e. It makes the oceans act as a heat sponge.           

f. It controls the Earth’s climate.

A．a-c-f

B．a-d-f

C．b-d-e

D．b-c-e小题4: If the ocean’s circulation pattern changed, ______.

A．Asia would suffer a hotter climate.

B．Europe would become hotter

C．the rest of the world would become warmer.

D．the climate of Europe would become colder.

下图是某实验小组的同学绘制的两种固体物质的溶解度曲线图。请你根据图示回答问题:

（1）t₁℃时，a物质的溶解度_______b物质的溶解度（填“>”、“<”或“=”）。

（2）将t₂℃时a、b两种物质相同质量的饱和溶液，分别冷却到t₁℃，析出晶体最多的是________物质。

（3）溶解度曲线图中的任何一点都表示溶液的一种特定状态。图中Ａ、Ｂ两个状态中，溶液属于不饱和状态的是_________，状态最不稳定的是__________。

患者，男性，50岁，跑步时不慎致踝关节扭伤，4h后来医院就诊。护士应给予的正确处理是（）。

A.局部用热水袋

B.用消毒液泡足

C.冷热敷交替

D.局部用冰袋

E.局部乙醇按摩