Flies (苍蝇) usually live in the dirty places.
Let’s look at a fly, and see where it27. First, it flies out of the window,28it stands on29dirty things in the street, and then it flies back to the house and walks over your30.
When a fly walks on the dirty things in the street, its31have got some germs32them. When the fly walks on your food with its dirty feet, it33the germs on your food.
What can you34this?
First, we learn that we mustn’t leave dirty things in the street or on the ground near35 . Second, we learn that all food must be covered so that flies may not36it. Third, we learn that flies often carry germs and we must kill them as soon as we see them.
小题1:A．walksB．standsC．livesD．flies小题2:A．firstB．secondC．thirdD．fourth小题3:A．someB．anyC．everyD．each小题4:A．foodB．drinkC．cups D．bowls小题5:A．bodyB．feet C．eyes D．head小题6:A．inB．toC．onD．over小题7:A．carries B．hasC．leavesD．takes小题8:A．study fromB．study forC．learn forD．learn from小题9:A．the factoryB．our doorC．our houseD．a window小题10:A．arrive B．getC．arrive inD．get to