学家约翰•利这段话中的“她”位于（    ）

下列代数式中，是分式的是（    ）

我国家庭电路的供电电压是____V；大量事实表明，不高于____V的电压才是安全电压，家用电器之间是____（选填“并联”或“串联”）的．当因出汗或其他因素导致双手潮湿时，人若接触较高的电压，发生危险的可能性变大，这是因为此时人的电阻明显____ （选填 “变大”或“变小”）．

    This is Mary's family. After dinner, Mary's mother talks on the phone. Mary's father watches TV. Mary's grandfather reads books. Mary's brother draws a picture. Mary plays with her teddy bear. They are a happy family.

⑴Mary's mother ____          A.

⑵Mary's father ____           B.

⑶Mary's grandfather ____      C.

⑷Mary's brother ____         D.

⑸Mary ____                 E.

根据算式每行还要画几个○，先画出来，再填空．