质量问题产生的主要因素一般为人、机、料、法、环五大因素。

In England, some food companies across the whole country have been told to carry out urgent (紧急的) tests on all beef products. Do you know why? That’s because some food companies used horsemeat to make beef products.

There are some examples about the horsemeat matter. In January, 2013, in a number of UK supermarkets, frozen hamburgers were found to have traces of horsemeat in them. Some frozen beef products made by food company FINDUS were found to contain horsemeat. All of the beef products made by this company have been removed from sale.

The government said that there’s nothing to suggest any health risk from the products. Food minister David Heath said people should not throw away frozen meat products and carry on eating meat. The government will tell people not to eat meat if the meat is not safe.

Food safety has been an important matter all over the world. More and more countries plan to take some useful measures to ensure the safety of food.

根据以上新闻内容，回答下列问题。

小题1:In England, some food companies have been told to ________urgently.

A．stop making beef products

B．test all their beef products

C．test all their products

D．remove all their products from sale小题2:What else did some food companies use to make beef products in England according to the passage?

A．Horsemeat.

B．Beef.

C．Fish.

D．Chicken.小题3:What does “traces” mean in the second paragraph?

A．描绘

B．追踪

C．痕迹

D．探索小题4:What should people do with meat products according to David Heath’s suggestions?

A．Send them back to the food companies

B．Throw them away.

C．Never eat them

D．Go on eating them.小题5:More and more countries plan to take some useful measures to ensure _______________.

A．horsemeat out of products

B．the food safety

C．the test food

D．the food sale

如图所示，叠放在一起的A、B两绝缘小物块放在水平向右的匀强电场中，其中B带+Q的电量，A不带电；它们一起沿绝缘水平面以某一速度匀速运动。现突然使B带电量消失，A带上+Q的电量，则A、B的运动状态可能为

A．一起匀速                B．一起加速

C．一起减速                D．A加速，B匀速

自我剖析和定位与经济状况无关。( )

计算题：某发电机组发电煤耗为310g/（kWh），厂用电率8%，求供电煤耗。

下列行为哪些是社群行为（）

A.群体识别

B.标记识别

C.异性识别

D.亲子识别