A.+→
B.→+
C.+→
D.→+
答案:D
用括号内所给单词的正确形式填空。
1. The famous_________(predict) will come true next year.
2. We will have_________ (little) pollution than before.
3. They want to know if he_________(arrive) in Yantai in 2 days.
4. There are many people ___________(have) a rest.
5. He_________(be) 17 years old next year.
中毒量强心苷可导致()
A.心肌细胞内K+增加,Ca2+增加
B.心肌细胞内Na+增加,Ca2+降低
C.心肌细胞内K+降低,Ca2+增加
D.心肌细胞内K+增加,Ca2+降低
E.心肌细胞内Na+,Ca2+增加