问题 选择题

生物组织中还原糖、脂肪和蛋白质三种有机物的鉴定实验中,以下操作错误的是[ ]

A.可溶性还原糖的鉴定,可用酒精灯直接加热产生砖红色沉淀

B.只有脂肪的鉴定需要使用显微镜

C.用双缩脲试剂检测蛋白质不需要加热

D.使用斐林试剂和双缩脲试剂最好是现配现用

答案

答案:A

阅读理解

阅读理解。

    There are many wetlands (湿地) in China and some of them have become the world's important wetlands.

The Chinese Yellow Sea Wetlands are among them. They are in Yancheng, Jiangsu Province. They are home

for many different kinds of birds and animals. The world's largest Milu Deer Nature Reserve (自然保护区)

is in them. More than 700 milu deer live freely there. There are not many red-crowned cranes in the world,

but every winter you can see some in the Red-crowned Cranes Nature Reserve in the Yellow Sea Wetlands. 

    The temperature in the wetlands is usually neither too high nor too low. There is a lot of rain and sunshine,

too. They are really good places for wildlife (野生生物). Offering food and home for some special kinds of

animals and birds is not the only reason why we need to protect wetlands. Wetlands are important because

they also prevent flood. But some people want to change the wetlands to make more space for farms and

buildings. This means there will be less and less space for wildlife. Luckily, more and more people are

beginning to realize the important of wetlands and wildlife. Every year, on February 2nd, many activities are

held to tell people more about wetlands.

1. The Chinese Yellow Sea Wetlands are in the _____ of China. [ ]

A. east

B. south

C. west

D. north

2. Usually the weather in the wetlands is _____.[ ]

A. hot

B. pleasant

C. cold

D. dry

3. The World Wetlands Day is on _____. [ ]

A. April 22

B. June 25

C. February 2

D. March 22

4. We must protect wetlands because _____. [ ]

A. they are home for wildlife

B. they can prevent flood

C. they can offer food to the animals and birds

D. all of the above

5. The best title for the passage is _____. [ ]

A. China's Wetlands Have All Entered the World's List

B. Wetlands-Home for Wildlife and Human Beings

C. Special Animals in the Chinese Yellow Sea Wetlands

D. Wetlands-Valuable Recourses (珍贵资源) of Land on the Earth

单项选择题

根据案例,回答1~29题:
飞龙公司2000年成立,其主要业务是生产并对外出口各种玩具。公司的总资产为5000万元,其中包括4座总价值1000万元的厂房,目前正在使用。公司要在新开发区中建设新厂房,此项工程已经开工,并且将于2008年底完工。公司教保了企业财产保险、机器损坏保险和利润损失保险。
公司于2005年购买了一批广州本田车,每辆价值25 7Y元。在购买这批车时,公司为每辆车都办理了车辆损失险和盗抢险。
2007年飞龙公司在非洲A国投资200万美元建厂,为防政治风险损失及时向某保险公司投保投资保险,保额为投资额的80%。
飞龙公司有员工1000多名,其中包括了年轻力壮者和年迈多病者。2006年初,公司为全体员工购买了团体人寿保险、团体人身意外伤害保险附加停工保险。约定停工保险的责任期限的终止日为保险合同结束后的1个月。为了转移因雇员的不诚实行为而使公司遭受损失的风险,公司还投保了雇员忠诚保证保险。
公司老板龙某为其重要雇员张三投保了雇主责任保险,期限为二年。张三的年薪为12万元,因其工作有可能会危及他的人身健康,保单规定死亡和伤残的最高赔偿限额分别为 36个月和48个月的工资,并有5天的免赔额的规定。

由于市场上生产玩具的公司逐渐增多,竞争颇为激烈,飞龙公司希望通过保险方式来增加其竞争力,对此,该厂作为投保人应向保险公司投保( )。

A.产品责任保险
B.产品质量保证保险
C.公众责任保险
D.合同保证保险