目前普遍认为,总和生育率为()即达到了生育更替水平。
A.1.5
B.1.8
C.2.1
D.2.5
参考答案:C
根据句意及所给提示,补全单词或用单词、固定短语、固定搭配的正确形式填空。
1. She showed her great i ______ in writing stories at an early age.
2. He rushed out and carried the little boy to the ______ (safe) .
3. Who was electricity ______ (discover) by?
4. The price of the cabbage is much ______ (高) than before.
5. My cousin Wang Fang ______ (弹钢琴) when I went into her house.
胸外心脏按压的正确部位是()
A.心前区
B.胸骨中下1/3交界处
C.胸骨中段
D.胸骨中上1/3交界处
E.剑突处