4 . If you don’t know the meaning of the word, you can ________ the right-hand column of page 200 of this dictionary .

A．lead to

B．refer to

C．date back to

D．get down to

5 . Directions: Complete the composition by translating the following Chinese into English.

I am Li Ming，a high school student. As far as I am concerned, our attempt to restrict the use of plastic bags isn’t very successful,    1    (导致了环境的不断恶化). Consequently,    2    (解决这个难题，在我看来已经刻不容缓了).

Firstly, it’s for our government to charge higher taxes on plastic bags. On top of that,    3    (我们应该发展循环经济), featuring the use of renewable materials. In addition, all the citizens should    4    (提高环保意识) and contribute voluntarily and jointly to the reduction of “white pollution” in our city.

    5    (我希望我的建议有用). Only with collective efforts can we protect our common home.