甲、乙、丙、丁四位老师各教两门不同的课．已知：①甲在星期二没课；②乙在星期一不给一班上课；③丙星期二前两节都有课；④物理老师星期一前两节没课．请你根据上面的课程表判断他们各教哪两门课．
直接写得数×5%=××0=﹣= 1﹣=÷= 0×+= 1﹣80%= 1÷=
直接写出得数﹣= 10÷= 35×= 0÷=×6=+= 5﹣= 5×÷5×= 6+=÷=
+= 6.2÷0.5== 1﹣== 44== 8﹣2== 4÷0.25==+4×=
1+= 2﹣=﹣= 1.2×0.01=﹣﹣=÷= 6×=×=÷6= 3÷4+=
直接写出得数． 1﹣9=+0.2=+﹣0.2= 5÷= 3.6×=×1.5=﹣= 1÷=×15= 4.5+= 2.43+4.57=﹣=×1.2= 2.5﹣= 5﹣1﹣1.6=÷= 2×0=（0.18×）÷9= 0.2 5×4=÷= （+）×12=
×5%=
×
×0=
﹣
= 1﹣
=
÷
= 0×
+
= 1﹣80%= 1÷
=
﹣
= 10÷
= 35×
= 0÷
=
×6=
+
= 5﹣
= 5×
÷5×
=
÷
=
+
= 6.2÷0.5=
= 1﹣
=
= 4
4=
= 8﹣2
=
= 4÷0.25=
=
+4×
= 2﹣
=
﹣
= 1.2×0.01=
﹣
﹣
=
÷
= 6×
=
=
÷6= 3÷4+
=
+0.2=
+
﹣0.2= 5÷
=
=
×1.5=
﹣
= 1÷
=
×15= 4.5+
= 2.43+4.57=
=
×1.2= 2.5﹣
= 5﹣1
﹣1.6=
÷
=
×0=（0.18×
）÷9= 0.2 5×4=
÷
=
）×12=
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