不用手直接安卸和处理针头、刀片和（）。A.锐利器具 B.戴手套 C.垫布 D.镊子

小明的妈妈买回来一箱24盒装的牛奶．他发现每盒外包装都标有“250mL”字样，纸箱的外包装标有质量为7kg．小明上网查知，这个品牌的牛奶密度为1.08g/cm³，比热容约为4.0×10³J/（kg•℃）．求：

（1）一盒牛奶的质量为多少？

（2）如果把一盒温度为20℃的牛奶放入热水中加热，经过一段时间后，牛奶和水最终的温度是50℃．则这个过程中牛奶约吸收了多少热量？

（3）小明利用整箱牛奶作为体育锻炼的器材，在0.1s内把这箱牛奶举高了0.5m，则小明在这个过程中对这箱牛奶做功的功率是多少？

（4）用尺测出纸箱的长、宽、高分别为30cm、20cm、10cm．把整箱牛奶放在水平地面上，则箱子对地面的最大压强是多少？

Celebrity (名人) has become one of the most important representatives of popular culture. Fans used to be crazy about a specific film, but now the public tends to base its consumption on the interest of celebrity attached to any given product. Besides, fashion magazines have almost abandoned the practice of putting models on the cover because they don’t sell nearly as well as famous faces. As a result, celebrities have realized their unbelievably powerful market potential, moving from advertising for others’ products to developing their own.

Celebrity clothing lines aren’t a completely new phenomenon, but in the past they were typically aimed at the ordinary consumers, and limited to a few TV actresses. Today they’re started by first-class stars whose products enjoy equal fame with some world top brands. The most successful start-ups have been those by celebrities with specific personal style. As celebrities become more and more experienced at the market, they expand their production scale rapidly, covering almost all the products of daily life.

However, for every success story, there’s a related warning tale of a celebrity who overvalued his consumer appeal. No matter how famous the product’s origins is, if it fails to impress consumers with its own qualities it begins to resemble an exercise in self-promotional marketing. And once the initial (最初的）attention dies down, consumer interest might fade, loyalty returning to tried-and-true labels.

Today, celebrities face ever more severe embarrassment. The pop-cultural circle might be bigger than ever, but its rate of turnover has speeded up as well. Each misstep threatens to reduce a celebrity’s shelf life, and the same newspaper or magazine that once brought him fame has no problem picking him to pieces when the opportunity appears. Still, the ego’s (自我的）potential for expansion is limitless. Having already achieved great wealth and public recognition, many celebrities see fashion as the next frontier to be conquered. As the saying goes, success and failure always go hand in hand. Their success as designers might last only a short time, but fashion — like celebrity — has always been temporary.

小题1:Fashion magazines today ________.

A．seldom put models on the cover

B．no longer put models on the cover

C．need not worry about celebrities’ market potential

D．judge the market potential of every celebrity correctly小题2:A change in the consumer market can be found today that _______.

A．price rather than brand name is more concerned

B．producers prefer models to celebrities for achievements

C．producers prefer TV actresses to film stars for advertisements

D．quality rather than the outside of products is more concerned小题3:The underlined sentence in Paragraph 4 indicates that any wrong step will possibly ______.

A．decrease the popularity of a celebrity and the sales of his products

B．damage the image of a celebrity in the eyes of the general public

C．cut short the artistic careen of a celebrity in show business

D．influence the price of a celebrity’s products小题4:The passage is mainly about _______.

A．celebrity and personal style

B．celebrity and market potential

C．celebrity and fashion design

D．celebrity and clothing industry

以下哪些属于病人常见的情绪情感活动（）。

A.情绪不稳定，易冲动

B.焦虑

C.恐惧

D.孤独

E.以上都正确

深圳证券市场的投资者可以利用同一证券账户在国内任意一家证券营业部买入证券。( )

Radar is not only to obtain（）,but also to measure their distance away from you.

A.brightness of obtain

B.color of targets

C.shape of targets

D.bearing of objects