【正文】
不載人的 ) mission. (宇航員 ) have discovered many interesting things. v(信息 ) has been around the country about three years. 答案: Ⅰ . months system ,recently ● Exercises for phrases (短語專練 ) Ⅱ .Complete the sentence with the proper phrase in the box. (用方框里適當(dāng)?shù)亩陶Z完成句子。 ) Jack: 1 Lucy:I have been to the ,I bought a book. Jack:What is its name? Lucy:“ Journey to Mars” . 2 Jack:No,I haven’t read it you mind lending it to me? Lucy: 3 Jack:Thank you! Lucy: 4 course you are. you read this book befo re? at all. have you been? 答案: Ⅲ . ● Exercises for grammar (語法專練 Ⅳ .Multiple choice(單項(xiàng)填空 ) his parents look they what’s happened to him. known know know 答案: 現(xiàn)在完成時(shí)主要強(qiáng)調(diào)過去發(fā)生的動(dòng)作對現(xiàn)在造成的影響