18.Children don't understand initially what they are reciting, but___it will have an impact on their thinking.
A、casually
B、especially
C、regularly
D、gradually
52.According to Paragraph 1,which of the following statements is TRUE of Mark Twain?
A、He left behind lots of money.
B、His works were written for children.
C、His works are full of adventures.
D、He is famous for his great works.
II.Vocabulary and Structure(15 points) Directions:There are 15 incomplete sentences in this section.For each sentence there are four choices marked A,B,C and D.Choose one answer that best completes the sentence and blacken the corresponding letter on the Answer Sheet. 6.I asked two passers-by how to get to the new railway station,but___of them knew it.