中国大学MOOC: _______ became the man who finally tackled the problem of rails.

The accident was___________ on videotape. A: captured B: saved C: tackled D: gained

This difficult problem we face in the project has to be tackled before we can __ to others.

Dave was from school for a week。 A: depicted B: disguised C: suspended D: tackled

I suggest to him that we _______ the trouble in another way. A: tackled B: tackle C: would tackle D: will tackle

9. The organization has been working with local government to _______the problem of climate change. A: tactic B: tackle C: tackling D: tackled

This difficult problem we face in the project has to be tackled before we can ______ to others. A: pursue B: advocate C: precede D: proceed

First of all, this difficult problem has to be tackled, thus ______ us to proceed to the others. A: to enable B: enabled C: enabling D: having enabled

The study is restricted by some limitation. ______, the population of the study included a sample from only one city, whereas other cities have not been tackled. ________, the study utilizes one instrument, mainly a questionnaire, while other instruments such as in-depth interviews and observation were not used.

2. The main contents of essays’ abstracts are ①research background introduction; ②problem to be tackled; ③research purpose;④introduction to the latest concerning literature;⑤research methods; ⑥research findings or results; 3⑦conclusion (8) research evaluation; (9) suggestions for further research.