【名词&注释】
直角三角形(right triangle)、钝角三角形(obtuse triangle)、锐角三角形(acute triangle)
[单选题]三角形的一个外角是锐角，则此三角形的形状是（ ）
A. 锐角三角形
B. 钝角三角形
C. 直角三角形
D. 无法确定
查看答案&解析
点击获取本科目所有试题
举一反三：
[单选题]30．
A. play
B. playing
C. plays
D. plaies
[单选题]Sally is a student of Grade Eight． She always works hard (11 ) her lessons． English is her favorite (12 )． She thinks that it is as (13 ) as Chinese， but it's more difficult (14 ) than Chinese． For example， a lot of English words and expressions are hard to remember．She often carries her walkman with her， and she spends time (15 ) English tapes every day．It (16 )her listening better and better．Sally is (17 ) student in her class． She often helps her classmates (18 ) their lessons after (19 ) her homework． Most of her classmates like t0 (20 ) her when they have ques- tions． They think she is smart and outgoing．
B. in
C. at
D. for
E. of
本文链接：https://www.zhukaozhuanjia.com/download/xq050y.html
