What can we learn about other parents from their remarks in Para. 1?
A、They were indifferent to adult learners.
B、They agreed on the idea of learning chess.
C、They gave congratulations to the adult learner.
D、They thought it odd for an adult to learn chess.
What is implied in the last paragraph?
A、The Amazon rainforest may disappear soon.
B、The Amazon may take up more CO2 in the futur
C、The size of the Amazon basin may become smaller
D、People may change the name of the Amazon River
4.In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation.