阅读短文，根据短文内容判断下列句子正误，正确的在前面的括号内写T，错误的写F。

     This is a picture of the twin sisters' room. It is a nice room. Lily's books are on the desk. Her backpack

is on the floor. Liz's pencils are on the books. Her backpack is behind her chair. Their coats are behind the

door. We can't see Lily and Liz in the picture. They're not at home.

( )1. This is a picture of Lily and Liz's room.

( )2. Lily's backpack is behind the chair.

(     )3. Liz's and Lily's coats are on the chair.

(     )4. Lily and Liz are not at home.

(     )5. Their room is nice.

一切电气设备的金属外壳接地是避免人身触电的保护接地。