题型：问答题 简答题 完形填空。 My name is Dave. I __1__ a good friend. His name is Tom. He is Chinese. He is in Beijing __2__ his parents now. His mother is our English __3__ . His fatheris a math teacher. They alllike their jobs. Tom is __4__ years old. He in Class one, Grade Nine. I'm in Class One, __5__ . I'm in Grade Seven. Tom is a good boy. He often helps me with my Chinese. He likes English food. We often go to the restaurant for dinner. Oh, Tom has a little (幼小的) sister. __6__ name is Linda. She is only three years old. She likes bananas and apples. I often __7__ bananas for her. This girl likes comedies, She often __8__ to see movies with her parents on weekends. I like this girl and she likes me, too. She says I'm very__9__. Well, Dave has an aunt. Her name is Cindy. She works at Huaxing Clothes Store. She gets up at six every morning and she gets home at six every evening. She likes playing __10__ piano and she has a piano. She wants to join the music club.( ) 1. A. has ( ) 2. A. with ( ) 3. A. teach ( ) 4. A. fifth ( ) 5. A. and ( ) 6. A. Her ( ) 7. A. call ( ) 8. A. goes ( ) 9. A. boring ( ) 10. A. a B. have B. and B. teaches B. first B. at B. She B. buy B. go B. difficult B. an C. is C. of C. teaching C. fifteen C. for C. They C. is C. going C. funny C. the D. are D. at D. teacher D. second D. but D. We D. has D. get D. not well D. / 查看答案
题型：问答题 简答题 关于酶联免疫斑点试验检测B细胞功能的优点，下列哪项不是（）A.可检测抗体分泌细胞B.可检测抗体的分泌量C.稳定、特异、抗原用量少D.可同时进行B细胞计数E.可同时检测不同抗原诱导的不同抗体的分泌 查看答案
题型：问答题 简答题 以下关于外连接描述正确的是（）A.可以把LEFTOUTERJOIN（左外连接）或RIGHTOUTERJOIN（右外连接）简写成LEFTJOIN或RIGHTJOINB.左外连接可以显示表达式左边的那个表中的所有行。如果反置FROM子句中两个表的顺序，则生成的结果集同使用右外连接的结果集相同C.右外连接可以显示表达式右边的那个表中的所有行。如果反置FROM子句中两个表的顺序，则生成的结果集同使用左外连接的结果集相同D.左外连接与右外连接没有区别 查看答案