【单选题】【消耗次数：1】
If he_____the storekeepers scissors,he would have forgotten to buy a pair.
①
would not see
②
had not seen
③
having not seen
④
has not seen
参考答案：
复制
纠错
相关题目
【单选题】
“ Has he seen this film ? ” “Yes. He _________ it several days ago.”
①
saw
②
has seen
③
had seen
④
was seeing
【单选题】
“ Has he seen this film ? ” “Yes. He______ it several days ago.”
①
saw
②
has seen
③
had seen
④
was seeing
【单选题】
9.“Has he seen this film?” “Yes. He _______ it several days ago.”
①
saw
②
has seen
③
had seen
④
was seeing
【单选题】
He looked at the little girl, _________ where he had seen her before.
①
wondering
②
wondered
【单选题】
Zhang Hua opened the door .There______ he had never seen before.
①
did a girl stand
②
stood a girl
③
a girl stood
④
a girl did stand
【单选题】
Having no money but _______ to know, he simply said he would go without dinner.
①
not to want anyone
②
not wanting anyone
③
wanted no one
④
to want no one
【单选题】
3. He had to ______ his past actions when he retired, or he would be punished.
①
consider
②
account for
③
think
④
popular
【单选题】
It was not until he arrived in class _____ realized he had forgotten his book.
①
when he
②
that he
③
and he
④
he
【单选题】
The students union has seen a growing ( ) to over several hundred.
①
crowd
②
public
③
population
④
membership
随机题目
【单选题】
根据样本资料算得健康成人白细胞计数的95%可信区间为7.2-9.1×10（9）/L，其含义是
①
总体中有95%的观察值在此范围内
②
样本中有95%的观察值在此范围内
③
该区间包含样本均数的可能性为95%
④
该区间包含总体均数的可能性为95%
【单选题】
已知某地100名正常成年男子红细胞数的均数为4.78×10（12）/L，标准差为0.38×10（12）/L，该地成年男子红细胞数95%医学参考值范围为
①
4.78×10（12）±2.58*0.38×10（12）/10
②
4.78×10（12）±1.96*0.38×10（12）
③
4.78×10（12）±1.96*0.38×10（12）/10
④
4.78×10（12）±2.58*0.38×10（12）
【单选题】
关于Ⅰ型错误和Ⅱ型错误，说法不正确的是
①
欲减小犯Ⅰ型错误的概率，可取较小的α
②
欲减小犯Ⅱ型错误的概率，可取较小的β
③
欲减小犯Ⅱ型错误的概率，可取较大的α
④
增大样本含量，可同时避免犯这两型错误