单项选择题The best title for the passage may be ______.
单项选择题The problem in the fourth paragraph refers to the fact that ______.
单项选择题It’s rat data but humans are mammals just like these animals are mammals. What does the sentence suggest
单项选择题Which statement is true according to the passage
单项选择题4()
A.happily B.far C.nearby D.alone
单项选择题It is implied in this passage that Japanese kids ______.
单项选择题According to Professor Kraemer, the major problem in cloning pandas would be the lack of ______.
单项选择题What can protect the brain of a woman according to the passage
单项选择题Which of the following statements is true according to the text
问答题昨天下午2时到4时你在做什么