内蒙古2020年专升本考试科目难度如何?有什么复习建议吗?

醛固酮的主要作用是（　　）

A.血管收缩

B.血管舒张

C.促进肾脏对水的重吸收

D.促进肾脏对Na+和水的重吸收

E.肾素的释放

既属于症状，也属于体征的是（ ）

A.咳嗽
B.黄疸
C.心悸
D.偏瘫
E.肝大

Mark Twain is one of America′s much-beloved authors,creating imaginative and humorous classics for children and adults alike,such as The Adventures of Tom Sawyer,The Prince and The Pauper,and Adventures of Huckleberry Finn．Twain passed away in 1910,leaving behind a treasure of great literature．But now,100 years after his death,he′11 have a brand-new book on the shelves:a three-volume autobiography．
Twain hasn′t been keeping busy in his tomb:it was his wish that publishers wait until 100 years after his death to publish his memoirs(自传),which he spent the last decade of his life working on．
The autobiography totals more than 5,000 pages,and likely won′t be all sunshine and roses．It?seems that Twain harbored some bitterness against former girlfriends and ex-friends．He also writes?negatively about politicians of his day,such as Teddy Roosevelt．It′s likely that he requested such?a long lead time for the memoirs because he didn′t want to hurt the feelings of anyone mentioned in?this work．
Although small sections of the memoirs have been previously published,the autobiography has?never been available in full,and should provide great insights into the man behind the classic?books．The first volume of the set will be available in November,and the trilogy is being published?by the University of California,Berkeley．
“There are so many biographies of Twain,and many of them have used bits and pieces of the?autobiography,”editor Robert Hirst told The Independent．“But biographers pick and choose what?bits to quote．By publishing Twain′s book in full,we hope that people will be able to come to their?own complete conclusions about what sort of a man he was．"


What does the underlined word“trilogy”in Paragraph 4 mean?《》（）

A.A work in three volumes．
B.An imaginative work．
C.A collection of stories．
D.Memoirs of famous people．