1 . What did the scientists do research on?
A.
Mice.
B.
Monkeys.
C.
Animals.
D.
Human beings.
2 . Dust from _________ of the houses didn’t make the mice fatter.
A.
nine.
B.
eleven.
C.
nineteen.
D.
two
3 . The dust changed the _________ of the mice.
A.
hormones
B.
fat
C.
EDCs
D.
eating habits
4 . From Paragraph 2, where can’t we find EDCs?
A.
In sofas.
B.
In household cleaners.
C.
In boiled water.
D.
In food packaging.
5 . What’s the main idea of the passage?
A.
The dust made the hormones in the mice different.
B.
Junk food made more fat in animals’ bodies.
C.
Keeping houses clean can be bad for us.
D.
House dust can make people fat.