For thousands of years, people have used plants to make medicines. They used different parts of the plants —the roots, the leaves, the flowers, and the bark (树皮). Today, doctors have rediscovered more medicinal (药用) values of some plants. Let’s look at some examples.
Foxglove is a common plant. People have used it to make the heart slow down. Recently scientists have developed another drug from it. This new drug helps prevent other heart problems.
In some areas, malaria has been a problem. Scientists have learned that the bark of a South American tree, the cinchona, can be made into a drug to prevent malaria. For a long time, the Chinese have known that a special plant, wormwood, can also fight malaria. Scientists have been working with it to develop new drugs against malaria.
In Germany, some scientists studied garlic (大蒜) for four years. They found that it helps prevent the build-up of plaque (血小板) because too much plaque is bad for health. This very common plant continues to be studied.
As we know, there are about 250,000 kinds of flowering plants in the world. Scientists have only studied little more than one percent of plants for their medicinal value. Maybe medicines for AIDS and cancer will be made from the other 99 percent.
【小题1】What can foxglove be used for?

Do the boys and girls have the same favorite subjects? The answer is   66 . There are many differences (不同) between boys and girls   67   school. As we know, sometimes we say boys   68   math and girls like English. That’s right. Many boys like P.E. And  69 like science and math, too. Many  70 like Chinese and English, 71  science and math  72 their favorite subjects. Girls usually don’t like math 73 science.  74 don’t girls and boys have the same favorite subjects? We don’t know.   75   you know?

As we know, Meizhou Island is a famous place of interest in Putian. My pen pal from Australia, Sam, would like to visit it very much. He is coming here for a holiday next week. He is planning to stay here for seven days. He has never come to Putian before, so he needs to know something about it. The weather is the most important thing that he would like to know. He wants to know what he should get ready for the trip and what kinds of clothes he has to take with him. Here is the seven-day weather report for Putian.

【小题1】How long will Sam stay in Putian?

As we know, zoos provide homes _____many endangered animals.

A.  in    B. of      C. for     D. with