单项选择题

A．To threaten the other animals.
B．To be the warning signs.
C．To show the food source.
D．To indicate the territorial marks.
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单项选择题
A．They are making more problem behaviors. B．They are more reliant on their parents. C．They are becoming more stressful. D．They are becoming more rebellious against their parents.
A．They are making more problem behaviors.
B．They are more reliant on their parents.
C．They are becoming more stressful.
D．They are becoming more rebellious against their parents.
填空题
Writing a term paper, research paper or essay for a college class is a kind of academic writing. Academic writing among professionals is a way to create new knowledge. A professor (26) students to write a paper. The students examine an issue, review what is already known, think about what they have learned and come to some (27) . This means that each student-writer must present information and also (28) . The student might support an idea, question it or even (29) it. Or the writer could show how the subject may be understood better or in a different way than it has been. And the student must support the position with evidence. Cultural differences may (30) when international students try to write this way. Writing teachers say students in many countries have learned to write beautiful descriptions about something without ever stating the main idea. American college students (31) state their main idea at the beginning of the paper. In other cultures, (32) may be organized to build toward the main idea, which is (33) at the end. But in the United States, the main idea of each paragraph should be in the first sentence. Another difference is about writing style. Other cultures may use lots of (34) words. But American English values short, strong sentences. Graduate tutor Lars Soderlund says non-native English speakers generally have some trouble with English grammar. He says their sentences may be too long. Or they (35) use articles such as a, an and the.
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