搜题请搜索小程序“爱下问搜题”
问题 判断题

机动车倒车时，后方道路条件较好的，应加速倒车，迅速完成操作。

答案

参考答案：错

解析：倒车要缓慢，路况信息随时可能变化，如果加速倒车，一旦后方有来车，极易使后方车辆反应不及而造成事故。

填空题

金属化合物根据其形成条件及结构特点分为（），（）及（）三类.
查看答案
单项选择题

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.

No matter what happened to the woman who owned the shoe, ______.

A. she must have lived a happy life
B. she certainly dropped the shoe on purpose
C. her adventurous spirit is definitely admired
D. her other shoes were equally fashionable
查看答案