一个打字员每分钟能打200个字，他要在11天内完成一本100万字的长篇小说，他每天至少需要完成多少小时？（精确到个位）

根据短文内容，判断下列句子是否正确，对的涂（A），错的涂（B）。
    Kate is a little girl. She's only five. She is not at school. She doesn't know how to read or write. But her sister Mary is a student. She knows how to read and write.
    One day, Mary sees her little sister in the room. She is at the table. There is a pencil in her hand. She is writing. “What are you writing, Kate?” she asks. “I'm writing to my friend, Rose.” says Kate. “But how can you? You don't know how to write.” says her sister. “Well.” says Kate, “It doesn't matter. Rose doesn't know how to read, either(也).”
____ Kate doesn't go to school because she is too young.
____ Kate and Mary arefriends.
____ One day, Kate is writing to Mary.
____ Kate can't write.
____ Rose can read.

下列菜豆种子萌发不同阶段的排列顺序，正确的是（    ）

①种子吸收水分

②胚根发育，突破种皮，发育成根

③子叶里的营养物质转运给胚根、胚轴和胚芽

④胚轴伸长，胚芽发育成茎和叶

几种物质的溶解度曲线如右图。则下列说法正确的是