亚太经合组织中，在贸易投资自由化与经济技术合作两个目标中更热衷于前者的可能是（）
A.马来西亚
B.越南
C.加拿大
D.中国
参考答案：A
在数字3、4、5、6、7、8、9的前面添加“+”或“-”号使它们的和为-10，请你想出2种方案．
根据对话内容，在空白处填入适当的句子、短语或单词，使对话意思完整，通顺。
A: Hello, Jane. This is Maria speaking. Would you like to go hiking with us this Saturday?
B: 1. . But I'm afraid I'll have to go to the library.
A: What about next Saturday?
B: 2. . Let's go hiking then.
A: OK. I hope the weather will be fine then.
B: I am sure it will. 3. .
A. Let's meet at half past seven.
B: Why not make it earlier, 4. .
A: That sounds good. Where shall we meet?
B: 5. .
A: Great! See you then!
B: See you!
