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【简答题】
已知数列 是首3，公差为1的等差数列，数列 是首 ，公比也为 的等比数列，其中 ，那么数列 的前 ______.
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皮皮学刷刷变学霸
举一反三
【简答题】A．check B．fight C．safety D．defeat
【单选题】Safety check is unnecessary when you work in:
A.
office
B.
restaurant
C.
a familiar place
D.
None of the above
【单选题】A check line is ______．
A.
A safety line attached to a man working over the side
B.
Used to measure water depth
C.
Used to slow the headway of a barge
D.
Used to measure the overhead height of a bridge
【单选题】Which of the following is beneficial to the hitchhiker's safety?
A.
Check out the driver's I. D.
B.
Make sure there is extra space in the car.
C.
Only hitch with the long-distance transportation cars.
D.
Use common sense and intelligence to judge the situation.
【单选题】Safety check is necessary when you work in:
A.
an office
B.
a restaurant
C.
a workshop
D.
All of the above
【单选题】All passengers______go through safety check before they take a plane.
A.
can
B.
may
C.
must
D.
ought
【单选题】N부터 N까지 表示从什么什么到什么什么 比如 从开始要结束시작부터 끝까지 那么 从灿烈开始到世勋,我都喜欢。 下面正确的是:
A.
찬열 부터 세훈 까지 다 사랑 합니다.
B.
찬열부터 세훈까지 다 사랑합니다.
C.
찬열부터세훈까지다사랑합니다.
D.
찬열부터 세훈까지다 사랑합니다.
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