马克思主义哲学的产生是人类认识发展到一定阶段的必然结果，是人类思想智慧的结晶，是人类认识发展结出的丰美硕果。关于马克思主义哲学，下列说法正确的是[ ]

①马克思主义哲学实现了实践基础上的科学性与革命性的统一

②马克思主义哲学可以帮助我们正确地认识和改造世界

③马克思主义哲学是在批判地吸取了黑格尔辩证法思想的基本内核和费尔巴哈唯物主义的合理内核基础上创立的

④马克思主义哲学有益于锻炼我们的思维能力，激发想象力和创造力

A、①②③

B、②③④

C、①②④

D、①②③④

用所给单词的适当形式填空。

1. We hope you can give up _____ (smoke). It is bad for your health.

2. He'll be OK if I do one small ____ (operate) on him.

3. Our _____ (agree) was that you would pay for our bill by the end of the month.

4. Paul is older than me. He is my ____ (old) brother.

5. We should fight against ____ (pollute).

6. There are many _____ (wolf) in the forest.

7. Mr. Brown has worked with several ____ (German).

8. With the _____ (develop) of the economy, all the things have changed.

9. Everyone is ______ (suppose) to do it.

10. I wonder how _____ (learn) English well.