单元练习高一年级英语单元练习九内容必修二Unit 4Word格式文档下载.docx

1、一、阅读理解AThe poaching，or illegal killing，of rhinos （犀牛） in South Africa is growing worse each year. The government recently reported that a record number of rhinos were poached in 2014，a year which had more rhinos killing in South Africa than ever before.The World Wildlife Fund，or WWF，says about 20,00

2、0 rhinos live in South Africa. That is more than 80 percent of the rhinos in the world. Edna Molewa，South Africas Environment Minister，says，“During 2014，we are sad to say this,1,215 rhinos were killed. This is a rise in the number of poached rhinos from 1,004 in 2013 and indeed very worrying.”The an

3、imals are hunted for their horns （角）Many people in Asia believe the horn has curing power，which drives poachers，at all costs，mad for more horns. But there is no scientific evidence for this belief. The horn is made of keratin. That is the same thing as human hair，fingernails and toenails.Ms. Molewa

4、said 386 suspected poachers were arrested last year，an increase from the year before. But rhino protection workers say poachers often go unpunished after arrest. South Africas legal system is ineffective. Ms. Molewa said more needs to be done and South Africa is taking strong measures to protect rhi

5、nos. The efforts include moving some of the animals to secret places in neighboring countries. “Now approximately 100 rhinos have been moved to neighboring states in the SADC region during 2014 and 200 more rhinos will be moved this year，”Molewa said.Jo Shaw，the rhino program manager at the WWF，said

6、，“Were talking about a loss of a hundred rhinos a month，or more than three a day. We really need to see effective action not just at a national level but internationally.” She says officials should find the criminal groups responsible for the poaching and punish them. Government officials are to mee

7、t in Botswana in March at the Intergovernmental Conference on Illegal Wildlife Trade.1What do we know about rhinos?AHalf of rhinos live in South Africa.BLess than 1,000 rhinos were killed in 2013.CThe killing reached the highest point in 2014.DThere are only 20,000 rhinos left in the world.2What is

8、the main reason for people to hunt rhinos?ATo get more keratin.BTo protect the farmland.CTo use them for decoration.DTo make money from horns.3Jo Shaw thinks that_.Amany criminal groups are well organizedBnew laws are needed to punish the killersCrhino protection needs international cooperationDconf

9、erences about protecting rhinos are to be held every year4What can we infer from the text?ARhino protection has a long way to go.BNo one would like to buy horns in the future.CThe illegal killing of rhinos will soon disappear.DRhinos living in South Africa will move to other countries.BThe longer a

10、teenager spends using electronic devices such as computers and smartphones，the worse their sleep will be，a study of nearly 10,000 16to 19yearolds suggests. More than two hours of screen time after school was strongly linked to both delayed and shorter sleep. Almost all the teens from Norway said the

11、y used the devices shortly before going to bed. Many said they often got less than five hours sleep a night.The teens were asked questions about their sleep routine on weekdays and at weekends，as well as how much screen time they clocked up outside school hours. On average，girls said they spent arou

12、nd five and a half hours a day watching TV or using computers，smartphones or other electronic devices. And boys spent slightly more time in front of a screenaround six and a half hours a day，on average. Playing computer games was more popular among the boys，whereas girls were more likely to spend th

13、eir time chatting online!Any type of screen use during the day and in the hour before bedtime appeared to disturb sleepmaking it more difficult for teenagers to nod_off. And the more hours they spent on these devices，the more disturbed their sleep became. When daytime screen use totaled four or more

14、 hours，teens had a 49% greater risk of taking longer than an hour to fall asleep. These teens also tended to get less than five hours of sleep per night.Dr. Hysing said her findings had suggestions for the wider population as so many people use these devices. “We know that sufficient sleep is essent

15、ial for good physical and mental health. Logging off may be one important step toward securing a good nights sleep.”Prof Russell Foster，an expert at the University of Oxford，said，“This is an important study as it provides practical evidence that the use of electronic devices before bed does indeed r

16、educe sleep duration.” He said teenagers should be warned of this.5What is stressed in the first two paragraphs?ATeens now tend to have more problems with studies.BTeens get harder to fall asleep with more screen time.CTeens addicted to screen are likely to be more energetic.DTeens sleep duration has nothing to do with