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【单选题】
---Is everything settled? ---Not yet. _____ I approached the problem, I couldn’t find a solution.A.
Whatever
B.
However
C.
Whenever
D.
Wherever
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参考解析：
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举一反三
【单选题】下列哪些说法是不正确的
A.
宿主因素决定人们对疾病的易感性
B.
病因、宿主、环境为疾病发生的三要素
C.
病因作用于宿主即可发生疾病
D.
宿主、环境、病因三要素保持平衡则人们呈健康状态
【简答题】下面关于统计的产生与发展描述正确的一项是:A. 统计的实践活动萌芽于社会，产生于封建社会，形成于资本主义社会。 B. 最早的统计学起源于17世纪中叶，法国人威廉·配第所著的《政治算术》一书。 C. 18世纪末，英国数学家阿道夫·凯特勒为近代统计学的发展做出了巨大贡献，因此有“统计学之父”之称。 D. 20世纪30年代，R.A.费希尔的推断统计理论标志着现代数理统计学的确立。
【单选题】The Captain of the Californian could have brought his ship to safety if he had realized that the Titanic was sinking.
A.
Y
B.
N
C.
NG
【单选题】Only when he failed ______ the stress he was under.A．he realized B．did he realizeC．realized heD．
A.
32. Only when he failed ______ the stress he was under. A．he realized
B.
did he realize
C.
realized he
D.
he did realize
【单选题】______ the 18th century ______ man realized that the whole of the brain was involved in the working of the mind.
A.
It was not until, that
B.
It is not until, when
C.
It is not until, then
D.
It was until, that
【单选题】下面关于统计的产生与发展描述正确的一项是:
A.
统计的实践活动萌芽于奴隶社会，产生于封建社会，形成于资本主义社会。
B.
最早的统计学起源于17世纪中叶，英国人威廉·配第所著的《政治算术》一书。
C.
18世纪末，英国数学家阿道夫·凯特勒为近代统计学的发展做出了巨大贡献，因此有“统计学之父”之称。
D.
20世纪30年代，R．费希尔的推断统计理论标志着现代数理统计学的确立。
【单选题】After one of the workshops, account executive Dale realized that.
A.
he had hired the wrong person
B.
he could have done more for his company
C.
he had not managed his workforce well
D.
he must get rid of his gender bias
【单选题】It was after he got what he had wanted very much _______ he realized it was not important.
A.
when
B.
that
C.
since
D.
as
相关题目：
【单选题】下列哪些说法是不正确的
A.
宿主因素决定人们对疾病的易感性
B.
病因、宿主、环境为疾病发生的三要素
C.
病因作用于宿主即可发生疾病
D.
宿主、环境、病因三要素保持平衡则人们呈健康状态