答：此題源自下文.有打字錯.signs才是標記,別嘆息!
譯：門上的標記可以告訴你在哪里進去或出去.
析; 本題句中的in 和out 并列,所以只能看作是副詞,不是介詞,不跟賓語,所以不能跟which構成動介賓關系.（你可以說go into a room,不說go in a room,可以go out of a room,不能說go out a room),而且這個which也不知道指代的是什么.
見到原文之前,對此題也有懷疑,一般說：I don't know where to go.(不說where to go in的）,所以以為題目有誤,答案應為whether:如I don't know whether to go in or out.但就是這句話,也是有邏輯錯誤的,因為一個人在某一時刻只能處在一個地點.這個地點要么在里面,要么在外面.沒有這么一個兩難選擇.原題中也沒有這個選擇項.
這個題確實出得不好.不應在沒有上下文的情況下,用這個題句.
上面有人譯成“從哪里進去或出去”,這個“從”,就是from,但where不包括這個from,只包含有at/in/on/to.
此句的語境是：有一幢封閉的建筑物,有門,但你不知道.所以在門上貼上門的標志,你就知道了,不會撞墻了.
33.Ways of Communication
When you speak,write a letter,or make a telephone call,your words carry a message.People communicate with words.But do you know people also communicate without words A smile on your face shows you are happy or friendly.Tears in your eyes tell others that you are sad.When you raise your hand in class,the teacher knows you want to say something or ask questions.You shake your head and people know you are saying "No".You nod and people know your are saying "Yes".
Other things can also carry messages.For example,a sign at the bus stop helps you to know which bus to take.A sign on the wall of your school helps you to find the library.Signs on the doors tell you where to go in or out.Have you ever noticed that there area lot of signs around you and that you receive messages from them all the time
People can communicate in many other ways.An artist can use his drawings to tell about beautiful mountains,the blue seas and many other things.Books are written to tell you about all the wonderful things in the world and what other people are thinking about.
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華江《英語名篇佳作100篇背誦手冊》非常感謝，順便問一句，動物的叫聲是用voice，還是sound？答：voice專用于人類。動物的聲音，動詞、名詞都有其特殊的詞。世間萬物發(fā)生的聲音都屬于sound