选A。

　　4．B　第四段主要讲了有规律地学习，根据．..go over your notes；look at the important points that your teacher is going to discuss the next day...可知，不仅要及时复习笔记，还要预习第二天的重要知识点，这样才有助于你理解下一堂课。故选B。

　　5．F　根据You will probably discover them after you have tried these.可知，这里讲的是你尝试这些方法之后可能就会发现它们。these 指代other methods。故选F。

二. 七选五

　　Everyone knows that fish is good for health.__1__ But it seems that many people don't cook fish at home. Americans eat only about fifteen pounds of fish per person per year，but we eat twice as much fish in restaurants as at home. Buying，storing，and cooking fish isn't difficult.__2__ This text is about how to buy and cook fish in an easy way.

　　__3__ Fresh fish should smell sweet：you should feel that you're standing at the ocean's edge. Any fishy or strong smell means the fish isn't fresh.__4__ When you have bought a fish and arrive home，you'd better store the fish in the refrigerator if you don't cook it immediately，but fresh fish should be stored in your fridge for only a day or two. Frozen fish isn't as tasty as the fresh one.

There are many common methods used to cook fish.__5__ First