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【简答题】
已知两个不相等的非零向量 两组向量 和 均由2个 和3个 排列而成.记 ， 表示 所有可能取值中的最小值.则下列命题的是_________（写出所有正确命题的编号）. ① 有5个不同的值. ②若 则 与 无关. ③若 则 与 无关. ④若 ，则 . ⑤若 ，则 与 的夹角为
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皮皮学刷刷变学霸
举一反三
【单选题】The meeting has been on for five hours and the plan of our activity is still____. [ ]
A.
uncertain
B.
known
C.
certain
D.
sure
【单选题】— The plan I put forward at the meeting has been _____. — That's great. [ ]
A.
approved
B.
mastered
C.
absorbed
D.
rejected
【单选题】The meeting has been postponed till next Friday.
A.
called off
B.
taken off
C.
put off
D.
pulled off
【简答题】The meeting has been called .
【单选题】How do you paraphrase the sentence "The meeting has been delayed."?
A.
Someone is delaying the meeting.
B.
Someone is putting off the meeting.
C.
The meeting was putted off.
D.
The meeting has been put off.
【简答题】The meeting has been put for a week.
【单选题】The date of the meeting has been from Friday to Monday.
A.
polluted
B.
owned
C.
mined
D.
advanced
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