下列实验装置图所示的实验操作或实验仪器,不能达到相应实验目的的是
A.闻气体的气味
B.用浓硫酸干燥氯气
C.向容量瓶中转移液体
D.称量2.1g氯化钠
答案:B
根据句意填空,每空一词。
1. — What do you think "anxious" mean? — It means .
2. Zhu used to be shy, but now he is .
3. If you were more to people, you would have more friends.
4. I don't like making speeches. I feel talking in front of many people.
5. What would you like to learn, English or French?
用“偶数’或“奇数”填空。
3783 +2047的结果是( ),3783×2047的结果是( )。