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【简答题】
某控烟计划希望在实施1年后，70%的参与者劝阻家人不吸烟，这项目标属于
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举一反三
【单选题】The special session of the National Snow and Ice Data Center was organized to ______ .
A.
attract more contributions to the cryospheric regions
B.
make more people realize the threats of climate change
C.
stimulate further research into the changes in ice thickness
D.
celebrate its 25th anniversary and discuss changes in the cryosphere
【单选题】截面上的内力大小（ ）。
A.
与截面的尺寸和形状无关
B.
截面的尺寸有关，但与截面的形状无关
C.
与截面的尺寸无关，但与截面的形状有关
D.
与截面的尺寸和形状都有关
【简答题】A.That a snow cover can cause ice to melt. B.How heat can pr ice from melting. C.How water flows into the ocean. D.Why volcanoes have a slippery suce.
【单选题】In mountainous regions, much of the snow that falls is ________ into ice.
A.
compiled
B.
dispersed
C.
embodied
D.
compacted
【简答题】铬的污染源有含铬矿石的加工、________、_____、_______等排放的废水
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