单项选择题

A．They might eventually cause you to lose sleep
B．They help produce a neurotransmitter in the brain.
C．You must not drink milk if you take them.
D．They make it unnecessary to take naps.
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单项选择题
A．He hasn’t had time to find another apartment.B．His mother dusted her apartment the day before last.C．He hasn’t cleaned the apartment since his mother visited.D．His mother was the last person to come over to his apartment.
A．He hasn’t had time to find another apartment.
B．His mother dusted her apartment the day before last.
C．He hasn’t cleaned the apartment since his mother visited.
D．His mother was the last person to come over to his apartment.
单项选择题
A．They know what they want to buy.B．They have little money to spend.C．They talk themselves out of purchases.D．They shop at the cheapest stores.
A．They know what they want to buy.
B．They have little money to spend.
C．They talk themselves out of purchases.
D．They shop at the cheapest stores.
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