问题
填空题
（）是真核细胞内最大、和最重要的细胞器，是细胞遗传与代谢的调控中心。
答案
参考答案：细胞核
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（）是真核细胞内最大、和最重要的细胞器，是细胞遗传与代谢的调控中心。
参考答案：细胞核
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| Someone says, "Time is money." But I think time is more 1 than money. Why? Because when money is spent, we can make it again. However, 2 time is gone, it'll never 3 . That is 4 we mustn't waste time. It goes without saying that the 5 is usually limited (有限的). Even a second is very important, we should make full use of our time to do 6 useful. But it is a pity that there are lots of people who do not know the importance of time. They spend their limited time smoking, drinking, and 7 . They do not know that wasting time means wasting part of their own 8 . In a word, we should save time. We shouldn't 9 today's work for tomorrow. Remember we have no time to 10 . |
| ( )1. A．beautiful ( )2. A．what ( )3. A．return ( )4. A．what ( )5. A．money ( )6. A．nothing ( )7. A．reading ( )8. A．time ( )9. A．stop ( )10. A．lose | B．important B．where B．get B．that B．time B．something B．writing B．food B．leave B．save | C． interesting C． when C． take C． because C． day C． anything C． playing C． money C． let C． spend | D．difficult D．who D．go D．why D．food D．whole thing D．working D．lives D．give D．take |