【多选题】【消耗次数：1】
Tom_____________ a letter from his mother yesterday.
①
got
②
accepted
③
bought
④
received
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相关题目
【单选题】
I received his mother’ s telephone call at eleven. _____ that
he was badly hurt in an accident yesterday.
①
Then did I know
②
Only then I knew
③
Only then did I know
④
Only then knew I
【单选题】
It was 12 o’clock _______we got home from the party yesterday.
①
when
②
what
③
which
【单选题】
Tom bought _________ bike in this store. Where did Lucy buy ____________?
①
his, her
②
his, hers
【单选题】
Yesterday was my birthday. My mother .
①
made a cake to me
②
made a cake me
③
made for me a cake
④
made me a cake
【单选题】
It was when Tom got to the office ____ the telephone rang.
①
which
②
that
③
how
④
what
【单选题】
10.Mother advised him that Tom is not a good guy to ______.
①
associate with
②
care about
③
touch
④
be concerned with
【单选题】
His mother _____alone since his father died.
①
lived
②
lives
③
has lived
④
is living
【单选题】
20. He has received many presents from admirers, from the_____ to the valueless..
①
precious
②
expensive
③
priceless
④
cheap
随机题目
【多选题】
适合采用抽样推断的有（ ）。
①
连续大量生产的某种小件产品的质量检验
②
某城市居民生活费支出情况
③
具有破坏性与消耗性的产品质量检验?
④
对全面调查资料进行评价与修正
⑤
食品质量检验
【多选题】
相关分析（ ）。
①
分析对象是相关关系
②
分析方法是配合回归方程
③
分析方法主要是绘制相关图和计算相关系数
④
分析目的是确定自变量和因变量
⑤
分析目的是判断现象之间相关的密切程度，并配合相应的回归方程以便进行推算和预测?
【多选题】
直线回归方程（ ）。
①
建立前提条件是现象之间具有较密切的直线相关关系
②
关键在于确定方程中的参数a和b
③
表明两个相关变量间的数量变动关系
④
可用来根据自变量值推算因变量值，并可进行回归预测
⑤
回归系数b=0时，相关系数r=0