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【单选题】
在进行区间估计时,如要求置信水平为95%,则相应的临界值为()A.
1.645
B.
1.96
C.
2.58
D.
1.5
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举一反三
【简答题】A. Anxious and depressed. B. Contented and relieved. C. Excited but somewhat sad. D. Proud but a bit nervous.
【判断题】performatives are sub-divided into two big types. They are explicit performatives and implicit performatives.()
A.
正确
B.
错误
【单选题】Questions 22 and 25 are based on the news report you have just heard.
A.
Contented and relieved.
B.
Anxious and depressed.
C.
Proud but a bit nervous.
D.
Excited but somewhat sad.
【简答题】1) 22. A ) Anxious and depressed . B ) Contented and relieved . C ) Excited but somewhat sad . D ) Proud but a bit nervous . 2) 23. A ) It is becoming parents biggest concern . B ) It is gaining incre...
【简答题】A. A) Contented and relieved. B. B) Anxious and depressed. C. C) Proud but a bit nervous. D. D) Excited but somewhat sad.
【简答题】______ vary widely among income levels and household types.
【简答题】A. Anxious and depressed. B. Contented and relieved. C. Proud but a bit nervous. D. Excited but somewhat sad.
【简答题】Questions 22 to 25 are based on the passage you have just heard. 22. A) Contented and relieved. B) Anxious and depressed. C) Proud but a bit nervous. D) Excited but somewhat sad.A. B. C. D.
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