题文
It's said that an American starts a speech with a joke，________a Japanese seldom.
| A．as |
| B．when |
| C．though |
| D．while |
推荐试卷
It's said that an American starts a speech with a joke，________a Japanese seldom.
| A．as |
| B．when |
| C．though |
| D．while |
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