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（本小题满分12分） 某电视台拟举行“团队共享”冲关比赛，其规则如下：比赛共设有“常识关”和“创新关”两关，每个团队共两人，每人各冲一关，“常识关”中有2道不同必答题，“创新关”中有3道不同必答题；如果“常识关”中的2道题都答对，则冲“常识关”成功且该团队获得单项奖励900元，否则无奖励；如果“创新关”中的3道题至少有2道题答对，则冲“创新关”成功且该团队获得单项奖励1800元，否则无奖励．现某团队中甲 冲击“常识关”，乙冲击“创新关”，已知甲回答“常识关”中每道题正确的概率都为 ，乙回答“创新关”中每道题正确的概率都为 ，且两关之间互不影响，每道题回答正确与否相互独立． (I)求此冲关团队在这5道必答题中只有2道回答正确且没有获得任何奖励的概率； (Ⅱ)记此冲关团队获得的奖励总金额为随机变量 ，求 的分布列和数学期望 ．
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举一反三
【单选题】Joe is not good at sports, but when it ________ mathematics, he is the best in the class.
A.
comes to
B.
comes up to
C.
comes on to
D.
comes around to
【简答题】简述成熟红细胞的形态、大小结构特点、功能及寿命 （4分）
【单选题】某会计人员根据记账凭证登记入账时，发现记账凭证中的金额错误，实际金额大于记账凭证上记录的金额。对此正确的更正方法是( )。
A.
划线更正法
B.
红字更正法
C.
补充登记法
D.
编制相反分录冲减
【单选题】When is the best time for upperclassmen to sell products to college freshemen?
A.
The best time is move-in day.
B.
The best time is when they become sophomore.
C.
The best time is when they become juniors.
D.
The best time is when they become seniors.
【简答题】The ______ Approach believes language is best taught when it is being used to transit messages.
【简答题】撰写关于“舒耳郎”“采耳”相关介绍的中英文解说词。 舒耳郎.mp4
【判断题】It is always the best choice to follow the career counselor’s suggestion when seeking a job.()
A.
正确
B.
错误
【单选题】When is the best time to start discussing college planning with the kids?
A.
When they are about 6 to 8 years old.
B.
When they are in junior high school.
C.
When they are taking a college prep course.
D.
When they are in latter part of middle school.
【简答题】Language is best taught when it is being used to transmit______.
【单选题】Only when we have weighted all the factors involved ______ decide when would be the best time to start.
A.
did we
B.
we did
C.
can we
D.
we can
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【简答题】The ______ Approach believes language is best taught when it is being used to transit messages.
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