Can dolphins talk?Maybe they can't talk with words, but they talk with sounds．They show their feelings with sounds．

　　Dolphins travel in groups．We call a group of fish a“school”．They don't study but they travel together．Dolphins are mammals(哺乳动物)，not fish, but they swim together in schools．Dolphins talk to other dolphins in the same school．They give information to each other．They can tell when they are happy, sad or afraid．They say welcome when a dolphin comes back to the school．They talk when they play．

　　They make a few sounds above water, but they make many more sounds under water．People can't hear these sounds because the sounds are very high．Scientists make tapes of the sounds and study them．

　　Sometimes people catch some dolphins for a large aquarium．People watch the dolphins in a show．Dolphins don't like to be away from their schools．In the aquarium, they are sad and lonely．There are many stories about dolphins．They can help people．Sometimes they save people's lives．Dolphin's meat is good but people don't want to kill dolphins．They say that dolphins bring good luck．Many people believe this．

根据文章内容，将下列句子补充完整．

1．Maybe dolphins can't talk with ________, but they talk with sounds．And they with sounds．

2．Dolphins travel in groups．A group is called a“________”．

3．Dolphins make ________ sounds above water than what they make under water．

4．When dolphins are in the aquarium, they feel ________．

5．Many people believe that dolphins bring ________．

阅读理解

　　Scientists are trying to turn deserts into good land again．They want to bring water to the deserts, so people can live and(A)________ food there．However, more and more land is becoming desert．Why?Scientists think that people are doing had things to turn good land into desert．

　　(B)地球上的一些地方雨量不足，but they still do not become deserts．This is because green plants are growing in dry places．Plants do not let the hot sun make the earth even drier．(C)Plants do not let the wind blow the soil away．When rain falls, plants hold the water．

1．将(A)的空白处填入一个适当的词语：

________________________________

2．将画线部分(B)译成英语：

________________________________

3．将画线部分(C)译成汉语：

________________________________

阅读理解

　　Once Einstein gave a lecture in many places in America．His driver always listened to him and knew the lecture so well that he was sure he could give it himself．So Einstein agreed that the driver gave the lecture for him．

　　As nobody knew Einstein．there, the driver gave the lecture for Einstein that evening．At first he was a bit afraid, but Einstein's smile made him feel better．He gave a good lecture and the people were quite pleased．

　　Then the driver started to leave and Einstein followed him without a word．When they got to the door, a man asked the driver a difficult question．The driver said that the question was very easy, and told the man to ask his driver behind to answer it．

根据短文内容填空，每空限填一词．

　　Einstein gave the 　　1　　 lecture again and again．His driver 　　2　　 to his lecture so many times 　　3　　 he wanted to give it 　　4　　．When Einstein knew it, he let the driver 　　5　　 the lecture for him that night．The driver gave a 　　6　　 lecture and the great scientist was quite pleased．

　　When they were 　　7　　 the lecture room, a man asked the driver a question．To show 　　8　　 easy the question was, the driver asked Einstein who followed him 　　9　　 to answer it 　　10　　 of him．

1．________　　2．________　　3．________　　4．________　　5．________

6．________　　7．________　　8．________　　9．________　　10．________