治疗心室扑动，下述措施中最有效的是
A．溴卞胺B．心脏按压C．心腔内注射肾上腺素D．静脉注射利多卡因E．非同步电击复律
参考答案：E
对于反应3S+6KOH====2K2S+K2SO3+3H2O，下列说法正确的是 （ ）
A．是氧化剂，KOH是还原剂
B．还原剂与氧化剂的质量比是2：1
C．氧化产物和还原产物的物质的量之比为3：2
D．若3mol硫完全反应，则反应中共转移了4mol电子
在下列各句的空白处填入一个最恰当的单词，使句子意思完整，语法正确。
1.—_______ gloves are these?
—They are Mary's.
2. In many countries people _______ hands when they meet for the first time.
3. Miss Green k________ her daughter and said good night to her.
4. An elephant is the largest animal on ____ .
5. He used to hate me. But now his attitude __ me has changed a lot.
6. Japanese and Koreans _ __ _ when they meet for the first time.
7. The teacher and students _ ____ each other at the beginning of every class.
8. Eating dumplings on the eve of the Spring Festival is a Chinese_______.
9. Many people are lying on the beach. They look very _ _____.
10. __ is a country that is famous for making watches.
