①洋葱表皮细胞中央有较大的液泡　

②口腔上皮细胞由细胞膜、细胞质、细胞核构成　

③洋葱表皮细胞中有叶绿体　

④视野中有气泡，可能是盖盖玻片时操作不当造成的　

⑤视野中光线过强时应调节反光镜和光圈　

⑥要想看到更多的细胞应换用放大倍数更大的目镜或物镜

根据短文内容判断正误，符合短文内容的写正确，不符合的写错误。

A Letter(—封信）

Dear Lucy,                                                                                                                                               Oct. 25

  How are you? I miss you so much. We have a new house now. It's near our school. I can go to school quickly. There is a library near our house. There are a lot of trees and flowers around(围绕)my house.

  Please come and visit us. If (如果) you get to the train station of our town, you can walk straight to the post office. Then turn left. My house is between the school and the park. I will welcome you warmly(热烈地).We can play together.

                                                                                                                                                                       Ann

一个蜡块漂浮在盛满酒精的容器中，溢出酒精的质量是4g，若把该蜡块放入盛满水的容器中(F蜡＝0.9×10³kg／m³、ρ酒精=0.8×10³kg/m³)，则溢出水的质量是(    )