Question 25. Many language learners do not try to learn all new words they come across.

            A. study                     B. like                                    C. meet                       D. understand

Question 26. Electric cars are better for the environment. In addition, they can save money on petrol.

            A. In conclusion        B. For example                      C. Nevertheless         D. Furthermore

Question 27. To an American,success is the result of hard-work and self-reliance.

A.devotion     B.industry     C.laziness      D.enthusiasm

Question 28.Solar energy doesn't cause pollution,but it is not cheap.

A.expensive     B.effective       C.Commercial      D.possible.