题目

There are so many interesting and creative hobbies that can improve your life and make you smarter.【1】 As the saying goes, reading gives us somewhere to go when we have to stay where we are. It enriches your knowledge and makes you feel better about yourself. Learning a new language is a most unique and challenging hobby. It enables your brain to perform better, improves your memory and reduces the risk of brain decline. 【2】Playing chess makes you smarter by exercising both sides of your brain. 【3】 And it helps improve your memory and builds your self-confidence.Writing makes your 若在实数范围内有意义，则x的取值范围是 [     ]A．x≥3B．x＞3C．x＜3D．x≤3