Going Forth, The Nations Multiply Unevenly
Despite was, famines, and epidemics, Earth’s population is booming ahead to new records—with no end insight.
Every day, the world adds enough people to populate a medium-sized city in the US. In one month, the number of new world citizens equals the population of New York City. Every year, there are 90 million more mouths to feed, more than the total population of Germany.
Several factors are propelling this rapid growth, including an element that is often overlooked the huge number of teenagers who are becoming mothers, particularly in the countries of sub-Saharan Africa In four African nations m Niger, Mali, Sierra Leone, and Ivory Coast—1 out of every 5 adolescent females of childbearing age has a baby annually. The US Bureau of the Census says this high rate of motherhood among teens has helped to maintain the high pace of births across most of the African continent By starting a family early
A. higher than that in India
B. lower than that in Mexico
C. higher than that in Indonesia
D. lower than that in South America
| As people continue to grow and age, our
body systems continue to change. At a certain point in your life your body
systems will begin to weaken. Your joints may become stiff. It may become more
difficult for you to see and bear. The slow change of aging causes our bodies to
lose some of their ability to bounce back from disease and injury. In order to
live longer, we have always tried to slow or stop this process that leads us
toward the end of our lives. Many factors contribute to your health. A well-balanced diet plays an important role. The amount and type of exercise you get is another factor. Your living environment and the amount of stress you are under is yet another. But scientists studying senescence (衰老) want to know: Why do people grow old They hope that by examining the aging process on a cellular level medical sc A. to improve in health after one’s disease and injury B. to recover from disease and injury C. to jump after recovering D. to run fast [填空题]列车运行是以车站、线路所所划分的区间及自动闭塞区间的通过信号机所划分的（ ）作间隔。
[单项选择]事物或现象阴阳属性的征兆是：（ ）
A. 寒热 B. 上下 C. 水火 D. 晦明 E. 动静 [单项选择]根据《江苏移动数据机房规范实施细则（2006版）》规定，集装架前、后门应保持（）以上的通透率。
A. 0.4 B. 0.5 C. 0.6 D. 0.7 [多选题]《行规》第61条：调动（）车辆时，调动前必须全部接通软管并进行自动制动机简略试验。
A.特种用途 B.专运 C.公务 D.易窜动货物 [单选题]有发热、咳嗽等症状的人员使用过的口罩应如何处理? ( )
A.直接丢弃到“有害垃圾”垃圾桶 B.用酒精消毒后可继续使用 C.毁坏后直接丢弃到垃圾桶 D.用开水(或至少56度以上的热水)浸泡30分钟,或用酒精喷雾消毒后密封丢弃到“有害垃圾”垃圾桶 [判断题]导线压接后接续管两端出口处、合缝处及外露部分应涂电力复合脂。 ( )
A.正确 B.错误 [填空题]在国际货物运输保险中,保险公司承保的三种主要风险是( )、( )和( )。
[单选题]Anne Whitney, a sophomore at Colorado State University, first had a problem taking tests when she began college."I was always well prepared for my tests. Sometimes I studied for weeks before a test. Yet I would go in to take the test, only to find I could not answer the questions correctly. I would blank out because of nervousness and fear. I couldn't think of the answer. My low grades on the tests did not show what I knew to the teacher." Another student in biology had similar experiences. He said, "My first chemistry test was very difficult. Then, on the second test,
I sat down to take it, and I was so nervous that I was shaking. My hands were moving up and down so quickly that it was hard to hold my pencil. I knew the material and I knew the answers. Yet I couldn't even write them down! "
These two young students were experiencing something called test anxiety. Because a student worries and is uneasy about a test, his or her mind does not work as well as it usually does. The student cannot write or think clearly because of the extreme tension and nervousness. Although poor grades are often a result of poor study habits, sometimes test anxiety causes the low grades.
Recently, test anxiety has been recognized as a real problem, not just an excuse or a false explanation of lazy students.
Special university advising courses try to help students. In these courses, advisors try to help students by teaching them how to manage test anxiety. At some universities, students take tests to measure their anxiety. If the tests show their anxiety is high, the students can take short courses to help them deal with their tensions. These courses teach students how to relax their bodies. Students are trained to become calm in very tense situations. By controlling their nervousness, they can let their minds work at ease. Learned information then comes out without difficulty on a test.
An expert at the University of California explains: "With almost all students, relaxation and less stress are felt after taking our program. Most of them experience better control during their tests. Almost all have some improvement. With some, the improvement is very great."
A University of California advisor said__________.
A.all students could overcome the anxiety after taking a special test anxiety program B.almost all students felt less stress after taking a University of California advising course C.students found it difficult to improve even though they had taken a special test anxiety course D.students found it easy to relax as soon as they entered a University of California advising course [单项选择]（）不是摩尔根提出的人类社会的阶段
A. 蒙昧期 B. 野蛮期 C. 过渡期 D. 文明期 我来回答: 提交
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