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【简答题】A recently study found people’s lives are made shorter in North China. It is showed the life expectancy(平均寿命) had been cut down by 5.5 years there. Researchers think that the heavy air pollution in Ch...
【单选题】How to draw people’s attention in Chinese culture?
A.
stand up
B.
raise a glass
C.
address people by name or title
D.
A, B and C
【简答题】听对话及短文，选择正确答案。 1. When do people celebrate Mother's Day? A. People in different countries celebrate their Mother's Day at different times. B. People all over the world celebrate Mother's Day on the sa...
【简答题】（本小题满分10分）选修4—4：坐标系与参数方程： 已知圆C的参数方程为 （φ为参数）； （1）把圆C的参数方程化成直角坐标系中的普通方程； （2）以直角坐标系的原点O为极点，x轴的正半轴为极轴建立极坐标系，把（1）中的圆C的普通方程化成极坐标方程；设圆C和极轴正半轴的交点为A，写出过点A且垂直于极轴的直线的极坐标方程。
【简答题】看图，完成句子。 1. There are ____________ people in Alice's family. Alice and Ann ____________ twin sisters. 2. Every evening, Alice ____________ newspapers. Her sister Ann ____________ cartoons on _________...
【单选题】You may assess a victim’s condition by all the following EXPECT
A.
checking whether there is a pulse.
B.
looking ,listening and feeling for breathing.
C.
replacing his medical bracelet or card.
D.
examining whether the airway is open and clear.
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