Ⅱ.补全信息
选择正确选项填入空白处，补全所给句子提供的信息。
A.that living things，including humans，had evolved from lower forms of life
B．that more and more people started to believe his theory
C．that the finches had evolved from a common ancestor
D．that he would be “a disgrace to yourself and all your family”
E．what food was available on that particular island
F．how did different species come to exist
1．What's more，he had recently received a letter from his father predicting ________．
2．As he studied these，he asked himself the question：________？
3．It seemed their beaks had evolved according to ________．
4．Darwin suspected ________，which had arrived on the islands a long time before.
5．Many people refused to believe ________．
6．But Darwin's scientific studies were so convincing ________．
[答案] 1－6 DFECAB
