单项选择题

Small farms and the lack of modern technology have ______ agricultural production.

A. blundered
B. tangled
C. bewildered
D. hampered
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单项选择题
On no account ______ ever leave the baby at home alone.
A. should you
B. you should
C. shall you
D. you shall
单项选择题
One study found that job applicants who make more eye contact are ______ as more alert, dependable, confident and responsible.
A. referred
B. perceived
C. recommended
D. presumed
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