粘土矿物的水分按其存在状态可分为()、()和()三种。
参考答案:结晶水;吸附水;自由水
闲置资产指闲置( )年以上的企业资产。
A.1年
B.2年
C.5年
D.10年
用词、短语或句子补全对话。
A: What do you do on weekends?
B: I often go to the movies.
A: To the movies?
B: Yes, 1._______ you?
A: I often 2. _______ the Internet.
B: 3. _______do you surf the Internet?
A: Twice a week. It's pretty fun.
B: 4_______on the Internet?
A: I usually talk with my friends on the Internet,
B: Do you have a QQ number?
A: Yes. It's 47886465.
B: 5. _______.We can talk on the Internet.