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【单选题】
抽样调查的特点不包括A.
工作量相对较小,人力、物力投入相对较少
B.
用样本统计量估计总体参数
C.
样本量小容易发现遗漏
D.
不适于患病率低的疾病
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皮皮学刷刷变学霸
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【简答题】______(我正要打电话给他)when his letter arrived．
【单选题】It worried me that the letter had not arrived, especially ________ it had never happened before.
A.
when
B.
that
C.
as
D.
which
【单选题】My letter arrived shortly after he passed away. I regret _________ earlier.
A.
not to have written it
B.
not to have opened it
C.
not having opened it
D.
not having written it
【简答题】I was ________ the point of telephoning him when his letter arrived. A) to B) on C) at D) in
【单选题】Your letter arrived a few days ago and I must confess that this obligation completely ()my mind.
A.
sliped
B.
skiped
C.
shipped
D.
slipped
【简答题】词汇应用。 I received a letter yesterday. It 1 (write) by my sister. She 2 (stay) in Shanghai now. She is a writer. She 3 (work) for a newspaper and also writes books. She 4 (live) there for nearly a year....
【单选题】My letter arrived shortly after he passed away. I regret ______________ earlier.
A.
not having written
B.
not to write
【简答题】饭店人力资源培训计划的具体内容有哪些?
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