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问题 单项选择题

既需要较大的流量、又需要较高的扬程，应选用（）。

A.离心泵

B.轴流泵

C.混流泵

D.潜水泵

答案

参考答案：C

阅读理解与欣赏
阅读相关材料，按要求答题。（6分）
材料一：在一次全球民意调查中，88％接受调查的中国人认为自己的生活远离“幸福”的标准，其中物价、房价和食品安全问题是影响民众幸福指数的主要因素。如果说物价、房价只是经济运行的周期性波动反映在某个特定阶段的价格表现，那么食品安全问题却是由来已久却难以根治的痼疾。经历过三聚氰胺事件的重击、瘦肉精事件的炸雷、染色馒头的喧闹、塑化剂事件，中国人对于食品安全的态度早已变得麻木和无奈，食品安全问题已然成为国人心中挥之不去的梦魇。相比在经济和科技领域建立起来的世界瞩目的成就和光辉文明，食品安全方面的落后和差距是巨大的。
材料二：冬天里，热气腾腾的糖炒板栗甚为热销。而消费者组织却提醒广大消费者，街头的糖炒板栗最好不要吃。正规的糖炒板栗应该用麦芽糖和精制植物油来炒，而有些街头摊贩用糖精钠和劣质的泔脚油炒栗子。糖精钠是国家明令限制使用的食品添加剂，食用多了会对肝脏和神经系统产生一定的危害。泔脚油就是从吃剩的饭菜中提炼出来的油，也是国家明令禁止使用的。
材料三：中国农业患病不轻：反季节果蔬生产，加剧了农产品中的药物残留；动物“速成班”将鸡、鸭、鹅等禽类生长周期缩短至28—45天，猪出栏时间缩短至2．5—4个月，凡此种种严重违背了生物学的种植和养殖规律。更有一些不法生产商逆食品安全法规而行，在食品中加入不利人体健康的非食用物质和食品添加剂。此类案件数量的持续上升，使我们深刻感受到现代科技与商业伦理之间发展的不平衡。
小题1:给材料一拟写一个标题。（不超过20字）（2分）
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
小题2:假如你的好友小立喜欢吃糖炒板栗，且经常放学后在校园周边的小摊贩上买糖炒板栗吃，阅读了材料二后，你有什么话对小丽说？（2分）
小题3:结合上述材料，请你分析中国食品安全问题凸显的原因和相应的对策，各列举两条。（2分）
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阅读理解

What do you want to be when you grow up? A teacher? A doctor? How about an ice-cream taster?

　　Yes, there really is a job where you can get paid to taste ice-cream. Just ask John Harrison, an＂Official Taste Tester＂for the past 21 years. Testing helps manufacturers to be sure of a product’s quality. During his career Harrison has been responsible for approving large quantities of the sweet ice cream－－as well as for developing over 75 flavors (味道).

　Some people think that it would be easy to do this job: after all, you just have to like ice cream, right? No－－there’s more to the job than that, says Harrison, who has a degree in chemistry. He points out that a dairy or food-science degree would be very useful to someone wanting a career in this＂cool＂field.

　　In a typical morning on the job, Harrison tastes and assesses 60 ice-cream samples. He lets the ice cream warm up to about 12℉. Harrison explains,＂You get more flavor from warmer ice cream, which is why some kids like to stir it, creating ice-cream soup.＂

　　While the ice cream warms up, Harrison looks over the samples and grades each one on its appearance.＂Tasting begins with the eyes,＂he explains. He checks to see if the ice cream is attractive and asks himself,＂Does the product have the color expected from that flavor?＂Next it’s time to taste!

Continuing to think up new ideas, try out new flavors, and test samples from so many kinds of ice cream each day keeps Harrison busy but happy－－working at one cool job.

小题1:What is John Harrison’s job?

A．An official.

B．An ice-cream taster.

C．A chemist.

D．An ice-cream manufacturer.小题2:According to John Harrison, to be qualified in the＂cool field＂, it is helpful to ______.

A．keep a diary of work

B．have a degree in related subjects

C．have new ideas every day

D．find out new flavors each day小题3:What does Harrison do first when testing ice cream?

A．He stirs the ice cream.

B．He examines the color of the ice cream.

C．He tastes the flavor of the ice cream.

D．He lets the ice cream warm up.小题4:Which of the following is probably the best title of the passage?

A．Tasting with Eyes

B．Flavors of Ice Cream

C．John Harrison’s Life

D．One Cool Job
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