题目内容
在[Cu(NH3)4]SO4配位化合物中，该配合物的配体是：
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在K3[Fe(CN)6]配位化合物中，该配合物的配位数是：
一个中心原子与几个单齿配体所形成的配合物叫螯合物。
Complete the sentences with can or could .1. Sir, you please pass me the salt?2. we leave now?3. When I was three, I swim.4. Simon play the guitar well now.5. You borrow my computer if you want.6. In a situation like this, anything happen.
Complete the conversation with can, can’t, could, or couldn’t.Sally: Do you want to go to the beachwith me today?Sam: I don’t know. It looks a bit cold. Ithink it (1)rain later.Sally: Well, the weather (2) be changeable. But it’s sunny now. Come on!Sam: (3)we wait an hour to see what happens?Sally: I don’t want to wait! Come on, Sam!Sam: You (4)be very impatient sometimes!Sally: Sam, hold on, you don’t want to come to the beach because you (5) swim! Isn’t that right?Sam: I (6) swim! Just not very well. That’s all.Sally: I don’t believe it! I (7) swim when I was five!Sam: Good for you. But I bet you (8)play the piano when you were five.Sally: No, I (9). Could you?Sam: Yes, of course. I (10) .
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