问题
填空题
若关于x的不等式（3a-2）x＜1的解集为x＜2，则a的取值为______．
答案
关于x的不等式（3a-2）x＜1，
得x＜
，1 3a-2
∵x＜2，
∴
=2，1 3a-2
∴a=
．5 6
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若关于x的不等式（3a-2）x＜1的解集为x＜2，则a的取值为______．
关于x的不等式（3a-2）x＜1，
得x＜
，1 3a-2
∵x＜2，
∴
=2，1 3a-2
∴a=
．5 6
| 完形填空。 | ||||
| When you go to the seaside, maybe you will notice (注意) that the wind very often comes from the sea to the land in the 1 part of the day, but in the evening, the wind blows in the opposite direction (方向). Why does this happen? In the morning, when the sun 2 it begins to warm the land 3 the sea. The land 4 warm faster than the sea. So while the air above the sea is cool the air over the land 5 warmer. The air 6 the land rises and the cool air from the sea moves 7 the land. When evening comes, 8 the sea and the land become cool, but the land cools more 9 than the sea. The wind now changes 10 direction. | ||||
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