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问题 多项选择题

采用溴量法测定司可巴比妥钠的含量时必须具备的条件是（ ）

A．加入定量过量溴滴定液

B．在盐酸介质中进行滴定

C．用硫代硫酸钠滴定液滴定

D．用淀粉指示剂指示终点

E．加入过量的碘化钾溶液

答案

参考答案：A,B,C,D,E

阅读理解

Fun Facts about animals
●After killing an animal, a cheetah waits half an hour to catch its breath.
●The biggest horses are the Shire horses. The tallest on record is 198cms from shoulder to leg.
●The only mammal that can fly is the bat. Bat’s wings are overgrown hands.
●Gorillas are actually very gentle animals although they have bad reputation (声誉).
●Gorillas build nests in tree tops to sleep in.
●The rhino has the thickest skin of any animal. Its skin is 2cms thick and covers their body like armor.
●An elephant’s trunk has no bones in it, only 100,000 muscles!!!
●Elephant babies take 22 months to develop inside their mothers before they are born.
●A kitten is born blind and helpless and stays close to its mother for protection. In just nine weeks, it can grow big enough to leave its mother and look after itself.
●A camel’s hump is actually used to store food. It is made of extra (多余的) fat.
●They have long legs to keep them as far away from the ground as possible
● Bears usually walk on 4 legs, but when they are frightened, they stand up and walk on two legs to make themselves appear bigger.
小题1:After a cheetah kills an animal, it         .
A．waits thirty minutes to catch its breath
B．waits half an hour for the animal to catch its breath
C．eats the food immediately
D．doesn’t eat the food until its friend comes.
小题2:It takes      22 months to develop inside their mothers before they are born.
A．Baby gorillasB．Baby bears
C．KittensD．Baby elephants
小题3:Which statement is NOT true according to the reading material?
A．The tallest Shire horse on record is 198cms from shoulder to leg.
B．Bat’s wings are overgrown legs.
C．The rhino’s skin is 2cms thick and covers their body like armor.
D．The camel has long legs to keep them cool in the desert.
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问答题 共用题干题

阅读下面一段文字，并回答问题： 盖儒者所争，尤在于名实。名实已明，而天下之理得矣。今君实所以见教者，以为侵官、生事、征利、拒谏，以致天下怨谤也。某则以谓受命于人主，议法度而修之于朝廷，以授之于有司，不为侵官；举先王之政，以兴利除弊，不为生事；为天下理财，不为征利；辟邪说，难壬人，不为拒谏。至于怨诽之多，则固前知其如此也。

王安石驳斥司马光种种观点的总立论原则是什么？
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