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【简答题】
完形填空。 Bill is thirty years old. He works in a 1 . He is a teacher. He goes to work 2 Monday to Friday every week. Usually he 3 at six in the morning. After breakfast, he 4 a bus to work. He is a(n) 5 teacher, so he often plays basketball, ping-pong and volleyball with his students. He has 6 classes every day. Two are in the morning and two are in the afternoon. He likes his students and his students like 7 too. He often plays sports, so he is very 8 . He usually eats dinner at home and then he watches TV for two 9 . On weekends, he often goes to the movies. He likes documentaries. He 10 they are interesting. (     ) 1. A. store (     ) 2. A. from (     ) 3. A. does homework (     ) 4. A. takes (     ) 5. A. math (     ) 6. A. two (     ) 7. A. he’s (     ) 8. A. busy (     ) 9. A. days (     ) 10. A. thinks B. home B. on B. gets home B. brings B. P.E. B. three B. he B. tired B. hours B. knows C. club C. in C. gets up C. sells C. art C. four C. his C. healthy C. weeks C. asks D. school D. at D. goes to the movies D. brushes D. science D. five D. him D. successful D. months D. shows
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【单选题】下列哪项不是基底细胞腺瘤的临床表现
A.
肿瘤生长缓慢,无痛
B.
小涎腺肿瘤多表现为坚实的黏膜下结节,界限清楚,可移动
C.
偶有出现表面溃疡者
D.
腮腺肿瘤大多位于浅叶,表面光滑,可移动
E.
有时有面神经麻痹现象
【多选题】设θ是总体的一个待估参数,现从总体中抽取容量为n的一个样本,从中得到参数θ的一个置
A.
B.
100个置信区间中约有90个区间能包含真值θ
C.
100个置信区间中约有5个区间能包含真值0
D.
E.
100个置信区间中约有90个区间不能包含真值θ
【简答题】设0是总体的一个待估参数,现从总体中抽取容量为n,的一个样本,从中得到参数0的一个置信水平为90%的置信区间[OL,0U],下列提法不正确的是( )。
【简答题】设 是 从 中抽取容量为 n 的样本 .
【单选题】一个具有任意分布形式的总体,从中抽取容量为n的样本,随着样本容量的增大,样本均值逐渐趋向正态分布,这一结论是( )
A.
抽样原理
B.
假设检验原理
C.
估计原理
D.
中心极限定理
【简答题】4) If we start some a year earlier, we shall _______the benefits a year earlier.
【单选题】The United Nations Conference on Drug Abuse, which took place earlier this year in Vienna, was a very______ meeting.
A.
productive
B.
overwhelming
C.
compulsory
D.
protective
【单选题】How many people in Southeast Asia have died of the deadly flu earlier this year?
A.
Sixteen.
B.
Eight.
C.
None.
D.
Twenty-four.
【多选题】设θ是总体的一个待估参数,现从总体中抽取容量为n的一个样本,从中得到参数θ的一个置信水平为90%的置信区间[θL,θU],下列提法不正确的是________。
A.
置信区间[θL,θU]是唯一的
B.
100次中大约有90个区间能包含真值θ
C.
置信区间[θL,θU]不是唯一的
D.
100次中大约有10个区间能包含真值θ
【单选题】Wildfires dominated the western parts of the United States earlier this year, confirming scientists' hypotheses that it would be the most______fire year yet, but the consequences of burning land and b...
A.
unfortunate
B.
expensive
C.
predictable
D.
incendiary
E.
disastrous
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