题目

What is the best way to study? This is a very important question. Some Chinese students often _______ very hard _______ long hours. This is a _______ habit, but it is not a better way to study. A good student must _______ enough sleep, enough food and enough rest. Every _______ you _______ to take a walk or play basketball or ping-pong or sing a song. When you _______ to your studies, you’ll find yourself _______ than before and you’ll learn more.Perhaps we can _______ that learning English is like taking Chinese medicine, we mean that like Chinese medicine, the effects of your study _____20．计算：（1）（-8）×（-7）；（2）12×（-5）；（3）2.9×（-0.4）；（4）-30.5×0.2；（5）100×（-0.001）；（6）-4.8×（-1.25）．