裸露病毒体的结构是()A．核酸+包膜 B．核心+衣壳 C．核心+衣壳+包膜 D．核衣

水泥强度等级和水灰比相同时，碎石混凝土强度比卵石混凝土的低些。

阅读理解。

     People who eat at home most of the time have better nutrition than those who go out to eat , a recent study shows. Cornell University professors Lana Hall and Karen Bunch interviewed (面试,接见) 3900 people in the survey. "People who eat less than 30 percent of their food away from home eat the most nutritiously," they said.

     "In general, Americans don't have nutrient, except for iron and calcium," they reported. They have the opposite problem--over-consumption (过度消耗), especially of fat.

     The food at many fast food restaurants is often low in vitamins. "People who eat more than 30 percent of total calories away from home eat foods that are generally low in nutrients per calorie," the professors said. More calories and enough nutrient intake (吸收) are required to achieve.

     One of the major health risks (风险) is eating too much fat. The professor found than fat consumption became greater as income (收入) went up. It also went up in houses where the female worked. This is probably because these people eat more highly processed (加工的) foods.

1. According to the passage, which of the following suggestions would you most readily take?

A. Eat out as many times as possible            

B. Eat at home as many times as possible

C.  Eat foods with a lot if iron, calcium and fat    

D. Eat more highly processed foods

2.What is the result if people often dine out according to the passage?

A. They tend to have better nutrition              

B. They tend to have less nutrition

C.They can save a lot of time                  

D. They will spend much money on it

3. Nowadays, a major health risk that people face is_______.

A. Eating too much fast food                  

B. Frequent dining out

C.Eating at home very often                  

D. Eating too much fat

4. The passage is about        .

A. Eating and Health                          

B. The Life Style in Modern Society

C. Fast food in the USA                        

D. Dining out Lowers Nutrient Intake

公务员在涉外活动中，要特别注意国际礼仪。以下不符合国际礼仪的是( )。

A．一起乘坐电梯及上车时，请女士先行
B．闲谈时询问美国客人前一段时间得了什么病
C．接待来访的外国客人时，请客人坐右边的座位
D．在德国，提前抵达访问地点后等到了约定时间再敲门

货品如何处理、如何放置的决定因素是( )。

A．货位分配原则

B．储存策略

C．机械设备的作业能力

D．仓库的面积

党的十八大报告指出，要着力增强创新驱动发展（）。

A.新机制

B.新力量

C.新活力

D.新动力