皮皮学，免费搜题
登录
搜题
【单选题】
下列关于有机化合物的描述正确的是( )A.
化学反应速度慢，但产率较高。
B.
沸点和熔点较低，多数低于100℃
C.
易燃易爆，热稳定性差。
D.
数目众多，目前已经超过5000。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】The worlds of science fiction abound with wonders. Yet modern technology progresses so rapidly that what is today’s wild dream may be next year’s kitchen appliance. A British scientist has prognostica...
【简答题】Complete the sentences with the words or phrases below. Change the form where necessary. resist conquer observation fascinated refer to ... as come up with look forwar...
【简答题】设计类中属性的可见性主要包括3种类型，即公有的、私有的和保护的，在UML中的表示方法分别是_______、_______和_______。
【简答题】单词拼写 1. The scientist made a great contribution to the world and built up his r___________(声望). 2. She comes o_____________(起初) from New York. 3. Look through newspapers every day and you can keep up ...
【单选题】根据以下资料，回答下列各题。 Can animals be made to work for us? Some scientists think that one day animals may be trained to do a number of simple jobs that are now done by human beings． They point out that at a c...
A.
Animals are very skillful at a circus．
B.
They are big and strong．
C.
Some animals are as clever as human beings．
D.
Animals can be trained because they like to get something as a reward．
【简答题】根据短文内容及首字母提示,补全空格内单词，使短文完整、通顺John Allen, an American scientist says, “The Internet is the world’s largest l 1 , but all the books in it are on the floor!” What he means(意思) is that the Internet is f 2...
相关题目：