问题 填空题

(附加题)在我国酿酒历史悠久,除此之外,利用传统和现代工艺,还可生产果醋、泡菜,提取植物芳香油等。请回答以下问题:

(1)在果汁的加工过程中,可添加___________酶来提高出汁率和澄清度。果汁饮料的包装瓶上写着105℃高温瞬时灭菌,这样做的目的是________。

(2)苹果醋是最受欢迎的饮料之一,其生产过程中利用了_____________的发酵作用,该过程需要控制的温度条件是_________。

(3)利用水果发酵制作果酒的过程中,发酵装置内加入果汁后要留约1/3的空间,目的有___________。果汁发酵后,可用酸性的重铬酸钾溶液鉴定发酵液中的酒精,要使鉴定的结果更有说服力,应设置对照实验,对照组和实验组的区别在于____________。

(4)泡菜发酵过程中,会产生多种酸性物质,其中主要是____________,还有少量的亚硝酸。对亚硝酸盐的定量测定可以用比色法,因为亚硝酸盐与对氨基苯磺酸的反应产物能与N-1-萘基乙二胺的盐酸盐偶联成___________色化合物。

(5)薄荷油是一种不溶于水、挥发性较强且高温下比较稳定的芳香油,所以常用的提取方法是______,除此之外,芳香油提取的方法还有______________。

答案

(1)纤维素酶和果胶     既保证杀死引起果汁变坏的病原微生物,又不会破坏果汁品质

(2)醋酸菌      30~35℃

(3)①.利于酵母菌有氧呼吸快速繁殖;②.防止发酵过程中汁液溢出       对照组用等量的蒸馏水代替发酵液

(4)乳酸       玫瑰红

(5)蒸馏法      萃取法、压榨法

阅读理解

Chinese press, thousands of tourists and space experts from Japan, Germany, Italy and other countries have gathered at China’s Xichang Satellite Launch Center in southwestern Sichuan Province on Tuesday, October 23 to witness the historic moment-the launch of the nation’s first moon orbiter (人造卫星), which is scheduled to take place at 6:05 p.m.on Wednesday.

Space center experts were worried earlier in the day when Xichang experienced an unexpected rainfall from about 4:05 a.m.till 7:10 a.m.on Wednesday, but they were able to breathe a sigh of relief when the weather cleared.Both national and local meteorological observatories (气象台)forecast cloudy weather for the launch site on Wednesday afternoon.However they said they believed it would not affect the launch mission, an opinion which was shared by technological staff at the site.     

Local villagers within a radius of 2.5 km of the launch site and under the trajectory(轨道) of the carrier have been told to move to safe areas two hours prior to the planned launch.Tourists have been charged 800 yuan (105 U.S.dollars) to witness the launch of China’s first lunar satellite.A local travel agency has said that the two observation platforms are capable of holding 2,000, but it is not known how many people paid for the chance.

The moon orbiter, Chang’e-1, named after a legendary Chinese goddess who flew to the moon, and the carrier Long March 3A have passed all pre-launch tests.     

China hopes to become the 17th nation to join the International Space Station (ISS) project, and carried out its first piloted space flight in October 2003, making it only the third country in the world after the Soviet Union and the United States to have sent men into space.In October 2005, China completed its second manned space flight, with two astronauts on board.

1.Which of the following can be the best title of the passage?

A.China counting down to launch of its first lunar satellite  

B.Chang’e-1 lunar satellite and its launch

C.Chang’e-1 lunar satellite to conduct 1st orbit transfer  

D.China hopes to join the International Space Station

2.Space center experts believed _______.

A.rainfall would come as soon as possible.

B.the cloudy weather wouldn’t affect the mission.

C.All the 2,000 tourists should paid 800 yuan each to witness the launch.

D.The mission was the third time of China’s manned flight.

3.Please arrange the time order of the following events according to the passage.

a.Local villagers have been told to move to safe areas.    

b.Unexpected shower fell on the early morning of Wednesday.

c.The moon mission is scheduled to take place.        

d.Journalists and tourists gathered at the Satellite Launch Centre.

A.b c d a              B.a b c d               C.d b a c              D.c d a b

4.It can be implied from the passage that _____________.

A.China has become the 17th country to join the International Space Station         

B.China will launch its manned spaceship to the moon soon

C.China is the third nation to send men into space       

D.China is pioneering in the space exploration now

单项选择题

下列哪一项关于引导、组建社区老人兴趣小组的步骤是最恰当的( )

A.兴趣小组发育成熟,社会工作者提供背后支持——社区老人群体的需求调查。发现老人兴趣热点——积极发动吸引、招募有兴趣的组员,成立兴趣小组——制订并组织实施小组活动计划——培养“小组领袖”,引导“小组领袖”,带领小组活动

B.社区老人群体的需求调查,发现老人的兴趣热点——积极发动吸引、招募有兴趣的组员,成立兴趣小组——制订并组织实施小组活动计划——培养“小组领袖”,引导“小组领袖”带领小组活动——兴趣小组发育成熟,社会工作者提供背后支持

C.积极发动吸引、招募有兴趣的组员,成立兴趣小组——社区老人群体的需求调查,发现老人的兴趣热点——制订并组织实施小组活动计划——培养“小组领袖”,引导“小组领袖”。带领小组活动——兴趣小组发育成熟,社会工作者提供背后支持

D.培养“小组领袖”,引导“小组领袖”带领小组活动——社区老人群体的需求调查。发现老人的兴趣热点——积极发动吸引、招募有兴趣的组员,成立兴趣小组——制订并组织实施小组活动计划——兴趣小组发育成熟,社会工作者提供背后支持

E.制订并组织实施小组活动计划——社区老人群体的需求调查,发现老人的兴趣热点——积极发动吸引、招募有兴趣的组员,成立兴趣小组——培养“小组领袖”,引导“小组领袖”带领小组活动——兴趣小组发育成熟,社会工作者提供背后支持