题目

化学概念间在逻辑上有如图所示的部分关系，对下列概念间的关系说法正确的是：包含关系：        并列关系：             交叉关系：                       A．纯净物与混合物属于包含关系     B．单质与化合物属于交叉关系C．化合物与氧化物属于包含关系     D．氧化反应与化合反应属于并列关系  完形填空． 　　My mother's dream of becoming a teacher was interrupted by an unexpected child：me．　　1　　 my mother left the fields of 　　2　　 formally, she did not leave it entirely． 　　On the first day of kindergarten, I 　　3　　 my lunch box, inside of which I found a note from my mother written on a 　　4　　, saying that she loved me, that she was 　　5　　 of me and that I was the 　　6　　 kindergartener in the world!Because of that napkin note I made it through my first day of kindergarten and many more school days to 　　7　　． 　　There have been many napkin notes since the first one．There were napkin notes in elementary school when I was 　　8　　 with math, telling me to “Hang in there．You can do it!” There were napkin notes in high school, 　　9　　 my basketball team was the first team in our school's 　　10　　 to play in a state championship, telling me, “There is no ‘I' in a team．You have got this 　　11　　 because you know how to 　　12　　．” And there were even napkin notes which were 　　13　　 to me in college and graduate school, far away from my mother's 　　14　　 touch．Despite the changes of colleges, majors, boyfriends, and the ways I looked at the world, my mother's encouragement, support and teachings 　　15　　 in years of love and napkin notes． 　　At Christmas this year, my forty-year-old mother was 　　16　　 going back to school to earn her degree in teaching．I also gave her a Christmas gift for school：a lunch bag filled with her favorite foods．　　17　　 she opened up her “You can do it!” napkin note 　　18　　 me, tears began running down her face．When her eyes met mine, I knew that she 　　19　　 my unspoken message：My mother is, and has always been, a(n)　　20　　． (1) [　　] A． Now that B． Even though C． As is D． Ever since (2) [　　] A． art B． science C． education D． agriculture (3) [　　] A． carried B． closed C． moved D． opened (4) [　　] A． towel B． handkerchief C． napkin D． cloth (5) [　　] A． proud B． afraid C． frightened D． ashamed (6) [　　] A． worst B． best C． luckiest D． richest (7) [　　] A． arrive B． begin C． spend D． follow (8) [　　] A． satisfied B． working C． armed D． struggling (9) [　　] A． before B． after C． when D． until (10) [　　] A． stadium B． history C． system D． campus (11) [　　] A． far B． high C． much D． fast (12) [　　] A． perform B． behave C． share D． compete (13) [　　] A． explained B． sent C． exposed D． handed (14) [　　] A． mental B． material C． physical D． spiritual (15) [　　] A． ended B． repeated C． faded D． disappeared (16) [　　] A． finally B． suddenly C． hardly D． totally (17) [　　] A． Before B． As C． Although D． Because (18) [　　] A． by B． to C． from D． with (19) [　　] A． invented B． forgot C． passed D． understood (20) [　　] A． parent B． student C． expert D． teacher