有机化合物A转化为B的反应如下,下列说法正确的是 A.B的分子式为C16H1O

题型:选择题

问题:

有机化合物A转化为B的反应如下,下列说法正确的是

A.B的分子式为C16H1O2        

B.上述转化属于还原反应

C.二者均为芳香烃

D.二者均能发生加成、酯化反应

考点:结构简式结构式
题型:选择题

Every object tells a story. Even the most ordinary objects can present to us powerful images. Sometimes it is the ordinary nature of these objects that actually makes them so extraordinary. Such is the case with an old leather shoe in a museum in Alaska. At first glance it does not look like much. It is a woman’s shoe of a style popular in the 1890s. But what is unique about this shoe is where it was found. It was discovered on the Checkout Pass, the famous trail used by the people seeking gold in Alaska. Who it belonged to or why it was left there is not known. Was it perhaps dropped by accident as the woman climbed up the 1500 stairs carved outface Or did she throw away goods that she didn’t need in order to travel lighter
Over 100000 people with "gold fever" made this trip hoping to become millionaires. Few of them understood that on their way they would have to cross a harsh wildness. Unprepared for such a dangerous journey, many died of starvation and exposure to the cold weather.
The Canadian government finally started requiring the gold seekers to bring one ton of supplies with them. This was thought to be enough for a person to survive for one year. They would carry their supplies in backpacks each weighing up to fifty pounds; it usually took at least 40 trips to get everything to the top and over the pass. Whoever dropped the shoe must have been a brave and determined woman. Perhaps she was successful and made it to Alaska. Perhaps she had to turn back in defeat. No one will ever know for sure, but what we do know is that she took part in one of the greatest adventures in the 19th century.

According to this passage, many people who went to Alaska ______.
A. eventually became millionaires
B. brought with them many shoes
C. had conflicts with the Eskimos
D. were not properly equipped

题型:选择题

下列各句中,没有语病的一句是.

A.全国医疗改革试点工作拟在2009年初展开,医改覆盖基本医疗系统的90%的人群,并为其负担至少一半的医疗费用为目标。

B.数年前当赖斯对中东地区进行访问时,两人在一个上流社会的派对中相识,立即对彼.

此产生了好感。

C.1月5日,国资委出资的河北省7家国有重点企业——一河北钢铁集团、冀中能源集团、开滦集团、省建设公司、省建工集团、华药集团、河北物流集团,签订战略合作协议,“抱团”应对全球金融危机。

D.社会竞争越来越激烈,人的心理压力也越来越犬,有相当一部分高血压就是由于工作.紧张诱发的。

题型:选择题

航迹向与真航向的差值称为()。

A.风压差

B.流压差

C.风流合压差

D.磁差

题型:选择题

各直达特快列车,由()确定停站。

A.铁道部

B.运输局

C.担当铁路局

D.相关铁路局

题型:选择题

斯喀戎(Sciron)

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