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aving when he saw an assistant signing to him. To his surprise, the assistant pointed to the book (9)______, “I put it there so as not to be sold out,” said the assistant. Then he (10)______ the student to go on with his reading. ( )1. A. good B. bad C. cheap D. expensive ( )2. A. shouldn39。t B. needn39。t C. mustn39。t D. can39。t ( )3. A. what B. which C. where D. when ( )4. A. surprised at B. not surprised at C. interested in D. not interested in ( )5. A. bought B. found C. read D. took ( )6. A. but B. and C. so D. or ( )7. A. little B. a little C. few D. a few ( )8. A. the book B. the shop C. the assistant D. the shopkeeper ( )9. A. in a bookshop B. in his hand C. in a corner D. in his pocket ( ). left B. let C. helped D. taught IV. 閱讀理解 All our food es from the soil (土壤 ). Some of us eat meat, but animals live on plants. If these were no plants, we should ha ve no animals and meat. So the soil is necessary for life. The top of ground is usually covered with grass or other plants. Plants grow in soil, which has a dark co lor. This dark soil is humus, dead leaves, dead plants and animal waste make it, but this takes a long time. When the humus has been made, plants can grow well in it. All soil needs food. If we don?t give it any, the plants will be weak. Animals waste is the best food for the soil, but chemical fertilizers (化肥 ) are also very useful. The same crop should not