题目内容
B. room
C. area
寒假学与练系列答案
Flies (苍蝇) usually live in the dirty places.
Let’s look at a fly, and see where it 27 . First, it flies out of the window, 28 it stands on 29 dirty things in the street, and then it flies back to the house and walks over your 30 .?
When a fly walks on the dirty things in the street, its 31 have got some germs 32 them. When the fly walks on your food with its dirty feet, it 33 the germs on your food.
What can you 34 this?
First, we learn that we mustn’t leave dirty things in the street or on the ground near 35 . Second, we learn that all food must be covered so that flies may not 36 it. Third, we learn that flies often carry germs and we must kill them as soon as we see them.
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