相关考题
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单项选择题
Why didn't the writer get the burglar alarm system switched on?（）
A．Because she didn't like its design.
B．Because the burglar alarm system had broken down.
C．Because she considered monthly fee unnecessary.
D．Because she thought their home security was not a problem. -
单项选择题
What did the Economic Mobility Project find in its research?（）
A．Children from low-income families are unable to bootstrap their way to the top.
B．Hollywood actors and actresses are upwardly mobile from rags to riches.
C．The rags to riches story is more fiction than reality.
D．The rags to riches story is only true for a small minority of whites. -
未知题型
已知公比为q的等比数列{an）中，a2=4，a5=-32．（I）求q；（11）求{an}的前6项和S6．
A.
（I）求q；
（11）求{an}的前6项和S6．
