What is the main idea of the article?
A.Plants that absorb metals are being studied by scientists.
B.Scientists are trying to create cancer-fighting crops.
C.Some wild plants can store micronutrients naturally.
D.Anti-cancer products in the foods are good to people's diet.
第1题
A.轻度缺水
B.中度缺水
C.重度缺水
D.低钾血症
E.高钾血症
第2题
A.中度失水
B.轻度失水
C.重度失水
D.低钾血症
E.高钾血症
第3题
高渗性脱水病人早期一般存在以下表现
A.皮肤弹性差
B.口渴
C.脉搏细速
D.血压下降
E.静脉塌陷
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