生物热
参考答案:
任何一个化学反应过程,都因为参加反应的物质中,原子最外层电子的运动状态改变而伴随有温度的变化
用所给单词的适当形式填空。
1. The teacher asks John _____ (come) to her office.
2. He often _____ (wash) his clothes on Sundays.
3. There _____ (be) a bookstore and two banks in my neighbourhood.
4. In China, everyone _____ (like) dumplings.
5. The coffee shop makes a lot of _____ (drink).
老年人的脉压差较年轻人为大这主要是由于()?
A.老年人的循环血量较少
B.老年人的心输出量较少
C.老年人的小动脉弹性降低
D.老年人的血液粘滞度增大
E.老年人的主动脉和大动脉弹性降低