年度终了，各种账簿都应当换新账，以便正确划分会计期间。( )_爱下问搜题

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问题判断题

年度终了，各种账簿都应当换新账，以便正确划分会计期间。( )

答案

参考答案：错

解析：年度终了，日记账、总账和多数明细账都要更换，但变动较小的明细账以及备查账可以连续使用，不进行更换。

完形填空

Megan's Library of Love book drive began in 2006, in memory of a student who passed away. The_ 21__ to send books to a school _22 _was created by Megan's classmates at Cedar Grove-Belgium Middle School as a tribute（悼念）to her.
The project formed out of the desire to23 _Megan, to help our community heal, and to make a _24__ in the life of others. Students have many 25_ of Megan, but the most vivid was her love for her family and the diligent 26__ she gave to her classmates. They combined this with her _27_ for learning and reading to create the Library of Love. This project honors Megan's special qualities. In the _28__of one of her classmates, Megan was, “A good daughter, a good student, a good friend. ”We are all blessed to have been a _29_ of Megan's life.
Every February, on Megan's birthday, fifth graders at Cedar Grove-Belgium Middle School _30 _donations of newly purchased books and send them to a school in need. The “Love books” are truly a __31__ of love meant to _32_ reading and learning. Students earn the money for postage by writing letters to local _33 _.The fifth graders also have the _34_ of labeling every book with a Library of Love sticker（标签）, _35_ the books into categories（类别）, and _36_ all the books for shipping.
In the two years since the Library of Love _37 _began, students have collected over 5000 newly purchased books to send to schools in need. In 2006, 3419 books were sent to St. Bernard's Parish to help _38 their school library after Hurricane Katrina destroyed the community. In 2007, 1613 books were sent to White Mountain School in Alaska, who _39 _their high school in a fire. Students look forward to sending the gift of _40 _to other schools in the future.

C．in difficulty

A．contribution

D．determination

B．communities

B．responsibility

B．organization

C．encouraging

单项选择题

1，4二氢吡啶类的钙离子通道阻滞剂类药物基本结构如下：

本类药物的两个羧酸酯结构不同时，可产生手性异构体且手性异构体的活性也有差异，其手性中心的碳原子编号是（）

A.2

B.3

C.4

D.5

E.6