典型偏头痛的特点是（） A.偏侧头胀痛 B.颈部疼痛伴随头昏 C.发作性搏动性头痛

Here are little cars that may some day take the place of today’s cars. If everyone drives such a car in the future, there will be less pollution in the air. There will also be more parking spaces in cities, and the streets will be less crowded. Three such Cars fit in the space now needed for one Car of the usual size. The little cars will cost much less to own and to drive. Driving will be safer, too, as these little cars can go only 55 miles per hour. The Cars of the future will be fine for getting around a city, but they will not be useful for long trips.

What’s the first advantage of little cars
There will be less（）

人们为了保证学校中教育活动顺利进行而创立和形成的一种特有的文化形态是()。

A．校园文化

B．学生文化

C．教师文化

D．活动文化

哪些采购申请单可以下推生成采购订单？（）

A.未审核

B.审核且关闭

C.审核未关闭

D.作废

梅毒Ⅰ期的临床表现错误的是（）

A.早期出现外阴表面溃疡

B.易伴发心血管疾病

C.硬下疳

D.梅毒血清学检查阳性

E.不洁性交为发病诱因

凡是贴上环境标志的产品，不仅表明质量合格，而且在（）过程中符合特定的环境保护要求。

A、规划

B、生产

C、使用

D、处理