Farmers can produce more by planting several different crops in the same field.But their s

Farmers can produce more by planting several different crops in the same field.But their success depends on which crops they plant together and how they mix (混合) them in the filed.In the past, the only way the farmers could learn which crops grow best together is to plant them and wait for the results.Now, however, a puter can give them answers.A new puter program written by Dr John Vanderwell of Michigan University can tell a farmer which plants grow well together and which do not.It can tell him how to plant the different crops; if he should plant each in a separate row, or mix the crops in the same row.It can tell the farmer how changes in planting each of the crops will affect the production of all of them.And it can tell him which plants can help reduce losses (损失) from diseases.
【小题1】Which of the following best gives the main idea of the passage?A．Computer helps find the best program for mixing plants.B．Computer helps produce more crops.C．Computer helps protect against insects and diseases.D．Computer helps grow different plants.【小题2】According to the passage, to get the best result, one needs to choose carefully     .A．the kinds of crops to be planted togetherB．the way for different crops to be mixedC．both A and BD．either A or B【小题3】It seems the new puter program can NOT tell us     .A．whether we should grow cotton and tomato togetherB．how we should plant cotton and tomato togetherC．what will happen if we grow potato, instead of tomato, together with cottonD．how we can grow rice in the tomato field【小题4】The new puter program seems most useful in saving us     .A．man powerB．seedsC．timeD．land【小题5】Which of the following is NOT true?A．Computers can tell farmers how many plants can grow together.B．With the help of puters farmers don't have to do a lot of work.C．With the help of puters farmers can get better results.D．The change of one plant may cause a change in production.B