题目

如图,直线a⊥直线c,直线b⊥直线c,若∠1=70°,则∠2=(     )       A.70°                  B.90°                        C.110°                      D.80°     答案:A     解:∵直线a⊥直线c,直线b⊥直线c, ∴a∥b, ∴∠1=∠3, ∵∠3=∠2, ∴∠2=∠1=70°. 故选:A.    33、— It’s such a pity.I didn’t get the first place in the exam. — Come on. __________ A.Nobody is perfect.                              B.Congratulations!      C.Bad luck!                                          D.You really did badly 评卷人 得分 三、书面表达 (每空? 分,共? 分)
数学 试题推荐