rainy 11、( ) It ___ the Chinese people 8 years to build the Dam. [单选题] * A. took(正确答案) B. costs C. paid D. spends 12、It’s so nice to hear from her again. ___, we last met more than thirty year ago [单选题] * A. What ‘s word B. That’s to say...
45) Nearly five years ago, and with the help of our father, my sister and I planted some cherry tomatoes(圣女果)in our back garden, since then---for all these year---we had been allowing tomatoes to self-seed where they plea...
1.ago只用做副词;before除用作副词外,还可用做连词和介词。 2.ago不可单独使用,before可以单独使用。 3.ago表示从现在算起的一段时间以前,常用于一般过去时中; before表示从过去算起的一段时间前,通常与过去完成时连用(多见于宾语从句中)。如: He said he had told...
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Abstract The experimental finding 10 years ago that the Hall resistance of two-dimensional electronic systems in strong magnetic fields is quantized has led to a large number of publications. Only a few aspects of the Quantum Hall Effect (QHE) will be discussed in more detail. First, the appli...
Unsolvability of the unboundedness problem for specification models allowing Fifo channels was proved a few years ago by Brand and Zafiropulo. The paper investigates a testing approach of that problem. Instead of reducing the model in order to give decidability results, we work with the largest ...
Beijing Hutongs are really old, some of them are more than 700 years old! That's even older than my grandparents! They have a special charm and are a window into the history and culture of Beijing. When you walk through the Hutongs, you can see traditional courtyard houses called Siheyuan...
1.Mr.Wang(teach) maths in the school a few years ago. 2.Keep quiet,please.The scientist(give)a talk to the students of Grade Three in the meeting—room. 3.Her younger brother is too young(go)to school 4.Mrs.Black stopped(buy)some vegetables on his way home. ...
20.I love to roller-skate,although I really couldn't skate well until a few years ago.I began skating at my neighborhood skating rink(滑冰场).Every Monday night a group of young people would (36)C at the rink.It seemed that (37)C else in the group could skate well and most of ...
1 #!/usr/bin/env python 2 import pysam 3 import numpy 4 import os,sys,re Cleaner reporting, better tests 7 years ago 5 from optparse import * * turning the tar.gz package from circbase.org into a github repo 7 years ago 6 from logging import error 7 8 COMPL...