大学英语（1）第一次网络作业(三次网络作业的平均成绩占期末考试成绩30%，请大家按提示认真复习好《大学英语》第一册相关课文和课后语法知识点后完成如下作业；作业一经批改评分，将不能修改；此次作业完成后应交到“在线作业”一栏本次作业界面中；作业必须按最后一页答卷表格格式作答，不要以附件形式缴交)一. 阅读：（ 1 ）The world’s population continues to grow. There now are about 4 billion of us on earth. That could reach 6 billion by the end of the century and 11 billion in a further 75 years. Experts have long been concerned about such a growth. Where will we find the food, water, jobs, houses, school and health care for all these people?A major new study shows that the situation may be changing. A large and rapid drop in the world’s birth rate has taken place during the past 10 years. Families generally are smaller now than they were a few years ago. It is happening in both developing and industrial nations.Researchers said they found a number of reasons for this. More men and women are waiting longer to get married and are using birth control devices and methods to prevent or delay pregnancy. More women are going to school or working at jobs away from home instead of having children. And more governments, especially in developing nations, now support family planning programs to reduce population grow.China is one of the nations that have made great progress in reducing its population growth. China has already cut its rate of population growth by about half since 1970.Each Chinese family is now urged to have no more than one child. And the hope is to reach a zero population growth with the total number of births equaling the total number of deaths by the year 2000.Several nations in Europe already have fewer births than deaths. Experts said that these nations could face a serious shortage of workers in the future.And the persons who are working could face much higher taxes to help support the growing number of retired people.1. The world’s population could reach _____B_______.A. 6 billion in 75 yearsB. 11 billion in 2075C. 11 billion by the end of this centuryD. 600 million in 15 years2. Which of the following is true? DA. The world’s birth rate is high er than ten years ago.B. There has been a slower population growth in the past ten years.C. Families are as large as before.D. Birth control has been well practiced in all nations.3. By the year 2000, the number of births and the number of deaths in China will ____C___.A. be greatly differentB. drop a great dealC. be equalD. become much larger4. According to the essay, China’s population control ___B_____.A. is not quite successfulB. should be considered a big successC. is far from being successfulD. is a complete failure5. It may happen in the future that the people who are working in Europe will have to pay much higher taxes because____C_______.A. more and more children will be bornB. the number of retired people will become ever largerC. fewer and fewer children will be bornD. they will be making a lot of money二．语法与词汇：（请认真复习好第一册课本Unit 3课后Pick up Your Grammar中的“将来时”后再完成如下5道选择题）6. By the end of 2020 China ____D______ much stronger and richer.A. will becomeB. would becomeC. is becomingD. will have become7. It ________D_______ years since I last saw you.A. wasB. isC. will beD. has been8. If you ____C____ quiet, I’ll tell you what happened.A. beB. are to beC. areD. will be9. The room _____D________ often cleaned by the worker.A. hasB. will beC. wasD. is10. The railway ______D________ in three years.A. is completeB. will completedC. has completedD. will be completed三. 介词填空: （按课本第1-2单元课文内容填入适当的介词）11. Successful language learners are learners __with___ a purpose.12. Successful language learners are independent learners. They do notdepend __on___ the book or the teacher.13. It is just like a 24-hour library, which enables us to search _for___ the rightinformation we need by simply typing in some key words.14. It is necessary for them to learn the language in order to communicate__with__ these people and to learn from them.15. __On__ the other hand, if your language learning has been less thansuccessful, you might do well to try some of the techniques outlined above.（提示：答案必须填入下面的答卷表格内，只要复制粘贴提交答卷即可，请不要用附件形式提交）大学英语（1）第一次网络作业答卷纸姓名：学号：专业：所在教学中心：。