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1. 
The katydid has patterns on its wings which look like _________.
A.
vein patterns
B.
leaves
C.
fierce eyes
D.
teeth
2. 
Why are scientist worried about the effects of global warming on glaciers?
A.
The glaciers are made of ice. If they melt, the sea level may rise and flood small islands.
B.
Animals living on the glaciers may overheat and die.
C.
If the glaciers melt, scientist will have difficulties observing some animals in their natural habitat.
D.
The glaciers are partly made of sand, if they melt, the sand will pollute the sea.
3. 
How do birds help to disperse the tiny seeds found in small, juicy berries?
A.
They spit the seeds out from their beak.
B.
They swallow the seeds and disperse them through their droppings.
C.
They keep the seeds in their mouth and throw them away after eating.
D.
The seeds stick themselves to the birds and drop off when the it fly away.