An estimated 50, 000 farmers ____the new method by the end of this year.
A、are adopting
B、have adopted
C、will have adopted
D、have been adopting
Ⅱ . Vocabulary and Structure( 15 points )Directions: There are 15 incomplete sentences in this section. For each sentence there are fourchoices marked A, B, C and D. Choose one answer that best completes the sentenceand blacken the corresponding letter on the Answer Sheet.6. The world will be different, and we have to be prepared to____ to the change.