低钾血症的临床表现包括（）
A.心率增快
B.肠鸣音亢进
C.U波出现
D.腱反射减弱
E.心电图示T波增宽，低平
参考答案：A, C, D, E
根据句意填入合适的词，首字母已给。
1. This is the sun. The sun is h__________.
2. This is s__________. Snow is cold and white.
3. This is w__________. The wind is blowing the leaves.
4. This is a c__________ and r__________. The cloud is a__________. The rain is b__________.
5. Let's c__________ from one t__________ ten.
紧急避险
