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【简答题】
下列选项中，（ ）是素质教育的时代特征。
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皮皮学刷刷变学霸
举一反三
【单选题】Passage 4 Questions 16 to 20 are based on the following passage: Animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need. It has been demonstrated th...
A.
encourage rats to drink vitamin-enriched water
B.
find out rats preference in flavor
C.
test whether rats know which drink is good for them
D.
demonstrate that vitamins are tasteless
【简答题】构图遵循的基本原则是()