问题
选择题
The American economy is still in trouble，________ the Chinese economy is beginning to pick up.
A．when
B．however
C．while
D．therefore
答案
答案：C
这两个分句之间是明显的转折关系，表示对比，所以选C 。
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The American economy is still in trouble，________ the Chinese economy is beginning to pick up.
A．when
B．however
C．while
D．therefore
答案：C
这两个分句之间是明显的转折关系，表示对比，所以选C 。