Ben often goes shopping with his mother．His favorite shops are the supermarkets．He likes them because they are big and bright and full of different things．Ben's mother shops very carefully．She goes to different supermarkets and compares(比较)their prices．Ben helps her．
One day Ben and his mother go to Big City Supermarket and Top Value Supermarket．They go to Big City Supermarket first．
“List the prices of the canned foods, Ben,”his mother says．“I will list the prices of the fresh foods．”
Ben walks up and down the aisles(通道)．He writes down all the prices．Then he finds his mother looking at the vegetables．
“How much are the canned tomatoes?”his mother asks him．
“Two dollars,”Ben says, looking at his list．
“How much is the canned fish?”his mother asks．
“Four dollars,”Ben tells her．
He tells her the prices of all the canned foods, and then they go to Top Value Supermarket．They compare the prices．Most things are cheaper at Top Value Supermarket than at Big City Supermarket．Some things are more expensive．
Ben's mother does her shopping at Top Value Supermarket because it is less expensive．
(1)
What is the main idea of this passage?
[ ]
A．
Ben's favorite shops are supermarkets．
B．
Ben's mother shops at different supermarkets．
C．
Ben's mother shops very carefully．
D．
Ben like helping his mother．
(2)
Why does Ben like supermarkets?
[ ]
A．
Because he can help his mother．
B．
Because they are big and bright．
C．
Because he likes listing prices．
D．
Because they have canned food．
(3)
Why does Ben's mother go to different supermarkets?
[ ]
A．
Because Ben likes them．
B．
Because she likes Ben to help her．
C．
Because she likes to compare prices．
D．
Because she get bored easily．
(4)
What does Ben do at Big City Supermarket?
[ ]
A．
He lists all the prices．
B．
He lists all the fresh food prices．
C．
He lists all the prices of the vegetables．
D．
He lists all the canned food prices．
(5)
Where does Ben's mother do her shopping in the end?
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