我们观察长方体最多可以看到三个面．______．
观察一个长方体（静止的），无论从哪个位置观察最多只能看到它的3个面．
故答案为：√．
根据对话内容，在每个标有题号的空白处填入一个适当的句子，使对话完整，合乎情景。
Tom: Good morning!
Ann: Good morning! Tom:where's Jay?
Ann: 1_______
Tom: London? Why has he gone there?
Ann: For his holiday.
Tom: Have you ever been there?
Ann: 2_______ But I'm sure I will go there someone. What about you?
Tom: Only once.
Ann: 3_______
Tom: Last year.
Ann: 4_______
Tom: For a week.
Ann: 5_______
Tom: I like it a lot.
Ann: I heard that it's foggy (有雾的) city.
Tom: Yes. there is almost much fog all the year in it.
首先应考虑
A．脑炎
B．脑膜炎
C．蛛网膜下腔出血
D．脑肿瘤
E．脑脓肿
