问题
填空题
（1）1011010（2）=（ ）（10）；
（2）154（6）=（ ）（7）。
答案
（1）90；（2）130
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（1）1011010（2）=（ ）（10）；
（2）154（6）=（ ）（7）。
（1）90；（2）130
| 根据下面的对话内容，从方框内的选项中选出最佳选项，选项中有一个为多余选项。 | |
| M: Oh, hi, What is your name again? Since this is only the 2nd day of school, I can't remember the students' names yet. W: 1.________ I have a hard time remembering names myself. M: Uh, Karen, right? W: 2.________ My mom's name is Karen. M: Nancy, Okay. I think I heard you were from England. W: Well, I was born there, but my parents are American. I grew up in France. M: 3._________ W: But then we moved here when I was nine. M: 4.________ W: Well, he is a college professor, and he is in Scotland at the moment. M: How interesting! What does he teach? W: Oh, I have no idea. 5._______He teaches chemistry.
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