风速在井巷断面上的分布是不均匀的。一般说来，在巷道的轴心部分风速最（），而靠近巷道壁

(9分)已知在酸性条件下有以下反应关系：

①KBrO₃能将KI氧化成I₂或KlO₃，其本身被还原为Br₂

2BrO₃^－＋10I^－＋12H^＋===5I₂＋Br₂＋6H₂O      6BrO₃^－＋5I^－＋6H^＋===5IO₃^－＋3Br₂＋3H₂O

②Br₂能将I^－氧化为I₂

Br₂＋2I^－===2Br^－＋I₂

③KIO₃能将I^－氧化为I₂，也能将Br^－氧化成Br₂，其本身被还原为I₂

IO₃^－＋5I^－＋6H^＋===3I₂＋3H₂O    2IO₃^－＋10Br^－＋12H^＋===I₂＋5Br₂＋6H₂O

(1)在上述反应涉及的粒子中氧化性最强的是________。

(2)在KI和KBr的混合溶液中，加入过量的KBrO₃，其氧化产物为________，还原产物为________。

(3)向含有1 mol KI的硫酸溶液中加入KBrO₃溶液，反应后碘元素只存在于I₂中，溴元素只存在于Br^－中，则加入KBrO₃的物质的量为________。

(4)将6 mL 0.4 mol·L^－1 KBrO₃溶液和10 mL 0.4 mol·L^－1KI溶液在稀H₂SO₄中混合。写出发生反应的离子方程式______________________________________________________。

(4)10I^－＋6BrO₃^－＋12H^＋===3Br₂＋3I₂＋4IO₃^－＋6H₂O

(1).质地柔润，补阳而不燥的是（）
(2).祛风除湿的是（）
(3).可以安胎的是（）
(4).可以峻补元阳的是（）

A．鹿茸 

B．肉苁蓉 

C．淫羊藿 

D．杜仲

阅读理解。

     Forget chip fat, sugar cane or rapeseed oil-the latest source of biofuel could be watermelons.

     Scientists have discovered that the fruit is a great source of sugar that can be readily distilled (蒸馏) into

alcohol to power cars and farm machinery.

     And because sellers reject 360,000 tons of" substandard"fruit annually in America alone they could be used

as an economical way to make fuel.

     The waste from US growers could produce nearly two million gallons( nine million litres) of biofuel per

year.

     In the study, researchers at the United States Department of Agriculture set out to determine the biofuel

potential of juice from rejected watermelons-those not sold due to cosmetic imperfec tions, and currently

ploughed back into the field.

     About a fifth of each annual watermelon crop is left in the field because of surface blemishes (瑕疵) or

because they are missha pen.

     Dr Wayne Fish, who led the team, found that 50 per cent of the fruit was fermentable(可发酵的) into

alcohol which could provide valuable fuel.

     "We've shown that the juice of these melons is a source of readily fermentable sugars, representing an

unexploited raw material for alcohol biofuel production," he said.

     The study, published in the journal Biotechnology for biofuels, discovered that watermelons could produce

around 20 gallons of fuel per acre from fruit that otherwise would go to waste.

     Production of biofuels has been targeted by western govern ments as a way to support renewable energy

targets.

     The European Union has a target for 2010 that 5.75 per cent of transport fuels should come from biological

sources, but the target is unlikely to be met.

     The British government's Renewable Transport Fuel Obligation requires five per cent of the fuel sold at the

pump by 2010 to be biofuel.

1. The passage mainly tells us _____.

A. western countries aim at producing biofuels

B. watermelons could be used to make fuel

C. the advantages of fuel made from watermelons

D. watermelon juice will be the largest source of renewable en ergy

2. Which of the following is NOT the reason why so many water melons are deserted in America each year?

A. They are substandard.

B. They are imperfect.

C. They are misshapen.

D. They are oversupplied.

3. It can be learned from the text that _____.

A. sellers in the world throw away 360,000 tons of watermelons every year

B. about two gallons of fuel could be made from rejected fruit per acre

C. half of the watermelons were fermentable into alcohol to provide energy

D. five per cent of fuel is required to be biofuel from watermel ons by 2010 in Britain

4. The underlined word " cosmetic" in Paragraph 5 probably means _____.

A. inside

B. flavor

C. surface

D. freshness

解表药多具有的药味是（）

A.辛味

B.甘味

C.酸味

D.苦味

E.咸味

生父与继母、生母与继父之间的婚姻关系一旦解除，继子女与继父母的权利义务关系也自然终止吗？