The problems need to be avoided in choosing a research topic（ ）. A: The topic is too broad. B: The topic is not interesting. C: The topic is too narrow. D: The topic is too hard.

Which can be the topic of the topic?

The best topic for the third topic is _______.

Which of the following is NOT one of the principles you should follow when choosing a research paper topic? A: A topic with one source B: A topic of appropriate scope C: A topic of real value and significance D: A topic that interests you

bundles serve the functions of topic introduction and topic clarification.

A topic is larger in scope(范围）than a topic sentence.

Which one of the following topic is not an appropriate speech topic?

Which of the following is the topic sentence of the topic second paragraph?

For the types of topic sentence, what is one of the exceptions mentioned?( ) A: Topic sentence at the beginning B: Topic sentence at the end C: Main idea in more than one sentence D: Topic sentence in the middle

The life story of Winston Churchill is used to ___________. A: introduce the topic B: arouse the readers’ interest C: reinforce the topic D: illustrate the topic