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单项选择题

A．expensiveB．artificialC．educationalD．low-cost……




A．expensive
B．artificial
C．educational
D．low-cost
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热门试题

单项选择题A．up toB．onC．inD．about

A．up to
B．on
C．in
D．about

单项选择题A．toolsB．robotsC．machinesD．electronics

A．tools
B．robots
C．machines
D．electronics

单项选择题A．moneyB．discountsC．pricesD．costs

A．money
B．discounts
C．prices
D．costs

单项选择题A．mechanicalB．standardC．cheapD．small

A．mechanical
B．standard
C．cheap
D．small

单项选择题A．moreB．lessC．noD．least

A．more
B．less
C．no
D．least