6-磷酸果糖激酶-1的变构激活剂是（）。
A.1，6—双磷酸果糖
B.ATP
C.2，6—二磷酸果糖
D.GTP
E.柠檬酸
参考答案：C
用所给词的适当形式填空（10分）
1. She wants ______ (read) a book.
2. Her keys _________(be) on the dresser.
3. Are _________(that) oranges?
4. Jim and Tom __________(have ) a basketball.
5. He has four __________(watch).
6. Please take the books to _________(they).
7. Jim _________(not play) sports every day.
8. ________(thank) for your help.
9. This book is very _________(interest).
10. My father __________(need) a new bike.
浓缩机单位面积负荷取决于入料性质以及要求的（）效果。
A、密度
B、速度
C、流量
D、澄清浓度
