题目内容
人为自然因素是短期可变因素，主要包括一国的开放程度、贸易政策、投资政策和政策连续性等。（）
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根据国别冷热比较法，热因素多的国家为热国，即投资环境优良的国家，反之，冷因素多的国家为冷国，即投资环境差的国家。（）
Complete the following passage with words chosen from this unit. The initial letter of each is given.How can students do well at school? Are straight-A students always those who are the brightest? Students are very interested in getting answers to questions like these as achieving a________[1] excellence is, and will always be, one of their top p________[2] at school. A professor of education who has recently c________[3] a survey on the subject revealed that top grades do not always go to the brightest students. When some basic p________[4] are followed, everyone can become a top student. To b________[5] with, study should always be the number one p______[6] for a student. Study time is always guaranteed and should never be c________[7] for personal recreation such as movies, TV programs or snacks. In a________[8], learning to be organized is very important. Keeping everything in its place and f________[9] class notes in order are two good examples. S________[10] up in class and asking questions is another winning f________[11]. A student can clarify any doubts by asking questions. P________[12] in group study is another help. By framing tentative test questions b________[13] on class notes, students can help each other prepare for tests. Last but not l________[14], always hand in nea work. A student who turns in neat work is already on the w________[15] to scoring an A. A student may suffer from different kinds of p________[16] at school, but if he follows these principles in his studies, soner or later he will become a top student.
Nowadays when we come home from work we can turn on the television and find out what (happen) ________ in the world.
He had (hard) ________left home when it began to rain.
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