问题
填空题
关于x的方程2x=
|
答案
∵x＞0时，y=2x＞1
∴x的方程2x=
只有正实数的解转化为 a+1 2-a
＞1⇒a+1 2-a
-1＞0⇒（2a-1）（a-2）＜0⇒a+1 2-a
＜a＜21 2
故答案为：
＜a＜2．1 2
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关于x的方程2x=
|
∵x＞0时，y=2x＞1
∴x的方程2x=
只有正实数的解转化为 a+1 2-a
＞1⇒a+1 2-a
-1＞0⇒（2a-1）（a-2）＜0⇒a+1 2-a
＜a＜21 2
故答案为：
＜a＜2．1 2
任务型阅读（本题有5小题，每小题1分，共5分） 阅读下面材料，将下列信息与图片进行配对，并将正确的选项写在对应题号后。 小题1:— Can I help you? — Yes, please. I want some bananas. 小题2:Look! It’s a photo of my family. These are my parents and me. 小题3:Lily likes English very much. She *speaks English well. She often takes part in（参加）English Speech Contest. 小题4:Julie likes having bread, eggs and milk for breakfast. 小题5:Rick likes basketball very much. He thinks it’s interesting. And he likes Yao Ming best.
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