P41頁(yè)
　　一 helicopter abacus ferry ambulance handcuffs purse cycling trainer astronaut
　　二 one hundred and fifty-eight
　　two thousand and one
　　fourty-five percent
　　zero point twenty-five
　　six point zero three
　　sixty degree
　　six point fifty-nine
　　one thousand five hundred and seventy-one
　　one/sixth
　　three/fifth
　　P43頁(yè)
　　一 play football wash his face play the violin make phone calls to sb.arguing fishing
　　二 （1）1,000、120、852 （2）15、79、17、27、2,005 (3) 3/10、3/5、3/7、7/9 (4) 50%、75% (5)25°、160°
　　（5）0.78、11.45、21.13、57.22、6.5
　　P44頁(yè)
　?。?）Sun is the only star in our salar system.
　　(2) It gives us heat and light.
　　(3) The moon is just 380,000 kilometers away.
　　(4) It looks much smaller because it is very for away.
　　(5) It takes four years for light to reach us from Alpha Centauri.
　　P45頁(yè)
　　二 自己填,因?yàn)槭前醋约簩?shí)際情況回答的問(wèn)題
　　P47頁(yè)
　　was/were cooked knew swam got taught leaved felt smelt drove ran thought kept bought began did
　　cost found throught stood spake came gave heard sold hurt saw steal took slept sit met brought flew
　　woke chose lost read rose wore
　　P48頁(yè)
　　(1) Wat's your favourite sports?
　　(2) A man steal a purse from a tourist.
　　(3) They did cought the thief.
　　(4) Our class consist of 40 students.
　　(5) I aim the torch at his eye.
　　P55頁(yè)
　　二 （1）The largest Mammals in the world.
　　(2)Africon Elephant.
　　(3)White Rhinoceros.
　　(4)100 feet long.
　　(5)8,000 pounds.
　　(6)White Rhinoceros.