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A certain band will perform 15 different songs in random order, and no song will be performed twice. If 9 of the songs are new, what is the probability that the first 2 songs that the band performs will both be new? Give your answer as a fraction.
[阅读&逻辑 ]新版冲分救命题 -11802
According to the author， the theory based on fluctuating resource availability might resolve "apparently conflicting and ambiguous results " because
[填空 ]新版冲分救命题 -11801
In our daily lives, we often (i)_____ our separate identities: you can have one identity at work and another online, for example. Such (ii)_____ disappear in certain circumstances, however, resulting in a cross-pollination of our different selves.
[阅读&逻辑 ]新版冲分救命题 -11791
The author mentions mortars, pestles, and grindstones most likely in order to
[阅读&逻辑 ]新版冲分救命题 -11790
The author compares early human populations with present-day human populations in order to show that the sequence of exploitation of resources described in the passage is
[阅读&逻辑 ]新版冲分救命题 -11789
It can be inferred that historical demographers generally believe which of the following about communities of fewer than 10. 000 people in early-modem Germany?
[阅读&逻辑 ]新版冲分救命题 -11788
The author suggests that according to historical demographers,the birth rate in early-modem German cities .
[阅读&逻辑 ]新版冲分救命题 -11787
Which of the following can be inferred from the passage about the “geologists”
[阅读&逻辑 ]新版冲分救命题 -11786
The primary purpose of the passage s to
[阅读&逻辑 ]新版冲分救命题 -11785
Which of the following,if true,most seriously weakens the argument?
[阅读&逻辑 ]新版冲分救命题 -11784
The author of the passage attributes the ongoing dispute in Chaucer scholarship regarding the sequencing of The Canterbury Tales to the fact that
[阅读&逻辑 ]新版冲分救命题 -11783
The author of the passage the relevance of scholarly efforts to establish which of the following as a partial bass for inferring the proper sequence of The Canterbury Tales?
[阅读&逻辑 ]新版冲分救命题 -11782
It can be inferred that the author of the passage would be most confident about scholars' ability to determine which posthumous manuscript best reflects the proper ordering of The Canterbury Tales if the scholars could determine which of the following?
[阅读&逻辑 ]新版冲分救命题 -11781
It can be inferred that the author of the passage and the “scholars”would agree that which of the following is a valid principle for preferring one manuscript version of a work over another ?
[阅读&逻辑 ]新版冲分救命题 -11780
The author mentions "brushwood weirs”primarily in order to
[阅读&逻辑 ]新版冲分救命题 -11779
The author suggests which of the following about the early British colonies in North America that failed?
[阅读&逻辑 ]新版冲分救命题 -11778
Which of the following issues would it be most useful to resolve in order to evaluate the proposed explanation of the continued rise in the official count of deaths due to Tomkin's disease?
[阅读&逻辑 ]新版冲分救命题 -11777
The author of the passage refers to the xenophobia of London audiences most probably in order to
[阅读&逻辑 ]新版冲分救命题 -11776
The passage implies that Du Bois believed wtich of the following statements about sociology?
[阅读&逻辑 ]新版冲分救命题 -11775
The passage implies that Du Bois attributed which of the following beliefs to Spencerian sociologists？
[阅读&逻辑 ]新版冲分救命题 -11774
The passage suggests that which of the following was true of Renaissance theatrical practices in Europe?