我在街上走时，看到了一古老的建筑物。

问答题这件事是什么时候发生的

问答题当我们到达车站时，火车已开出了。

单项选择题二、完形填空

单项选择题Which of the following is the best title for the passage

单项选择题What cause the BMD loss to astronauts according to this passage

单项选择题Please paraphrase the clause your actions can speak louder than your words .

单项选择题According to the third paragraph, when you are invited to dinner, you should arrive there ______.

单项选择题What is special about the program

单项选择题It can be inferred from the passage that Houdini became famous ______.

单项选择题二、完形填空