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【单选题】
Every culture and every country in the world celebrates New Year, but not everyone does it the same way. The countries in North America and Europe welcome New Year on January the first. This practice began with the Romans in the Middle East, New Year is when spring begins. People in China and Vietnam celebrate it on the first day of the Spring Festival, which is the first day of their calendar based on the moon. Rosh Hashana, which is the Jewish (犹太人的) New Year, comes at the end of summer. The Hindus (印度教教徒 ) in India celebrate the first day of each season, so they have four New Years. In all these cultures, there is a practice of making noise. People made noise in ancient times to drive away the evil spirits (妖精) from their homes. Today making noise is more of a custom than a religious rim In the United States, many people stay up until midnight on New Year's Eve to watch the clock pass from one year to the next. Friends often gather together at a party on New Year's Eve, and when the new year comes, all ring bells, blow' whistles, sing songs, and kiss each other. A favorite Scottish song which everyone sings together is Auld Lang Sync. The words tell of old friends and good times. In all cultures, New Year's Day is a time when people think of new beginnings. They want to make the coming year better than the last one. Many people in the United States make New Year resolutions. These are specific promises that they make to improve their behavior, change their habits, and become better people. There are many jokes about how a person keeps his or her New Year resolutions. In ancient times, the practice of making noise was meant ______.
A.
to keep the evil spirits away
B.
to have fun
C.
to celebrate the coming of the new year
D.
to keep to a custom
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参考答案:
举一反三
【单选题】【C5】______
A.
wake
B.
work
C.
do
D.
finish
【简答题】堆排序的算法时间复杂度为()。 注意:填空所用字符均为西文。
【简答题】英汉互译。 1. 把电视机声音调低 3. 洗盘子 5.  not at all 7.  finish these tasks __________ __________ __________ __________ 2. 立刻,马上 4. 制作海报 6.  in a minute 8.  that's no problem __________ __________ __________ _____...
【单选题】堆排序算法的时间复杂度为( )。
A.
O(lgn)
B.
O(n)
C.
O(nlgn)
D.
O(n 2 )
【单选题】早期诊断某些先天性畸形,可进行染色体分析的细胞是( )
A.
蜕膜细胞
B.
羊水中的细胞
C.
绒毛膜细胞
D.
蜕膜细胞和羊水中的细胞、
E.
绒毛膜细胞和羊水中的细胞
【单选题】如何正确理解财政平衡()
A.
收支大体平衡,略有少量赤字
B.
收大于支,略有结余
C.
收支相抵,不多不少
D.
是绝对收支相等
【简答题】堆排序的算法时间复杂度为__________。【合肥工业大学1999三、10(2分)】
【判断题】因为堆排序的算法时间复杂度为【图片】,冒泡排序的算法复杂度为【图片】,所以堆排序一定比冒泡排序的速度快。
A.
正确
B.
错误
【简答题】堆排序的算法时间复杂度为:____
【多选题】从孕妇体内取下列细胞进行染色体分析可早期诊断某些先天性畸形()。
A.
阴道脱落细胞
B.
蜕膜细胞
C.
血细胞
D.
羊水中的细胞
E.
绒毛膜细胞
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