下列饮食习惯不合理的是（　　）

现有某种细胞100个，其中有占总数$\frac{1}{2}$的细胞每小时分裂一次，即由1个细胞分裂成2个细胞，按这种规律发展下去，经过多少小时，细胞总数可以超过10¹⁰个？（参考数据：lg3=0.477，lg2=0.301）．

平面直角坐标系中，O为坐标原点，点A的坐标为($\sqrt{3}$，1)，将OA绕原点O按逆时针方向旋转90°得OB，则点B的坐标为（   ）

任务型阅读
   Do you like chocolate? Maybe most people do. A box of it can be a great gift. Buy one for a friend and give it as a surprise. See how happy that person gets.
   Say you’ve just got a box of chocolate. Which piece would you pick first? A man has studied people’s choices(选择). He says they tell something about the person. What if you choose a round piece? You are a person who likes to go to the party. What if you choose an oval(椭圆形的)shape? (1)You are a person who likes to make things. Picking a square shape shows something else: The person is honest and truthful, and you can depend on(依靠)him or her.
   (2)What kind of ________do you_______? Maybe you pick milk chocolate. This shows you have warm feelings about the past. Dark chocolate means something else. A person who chooses it looks toward the future. What about white chocolate? Would you choose it? If so, you may find it hard to make up your mind. Some people like chocolate with nuts(果仁). These are people who like to help others.
   Different choices may show different characters(性格). Do you believe these ideas? Can candy tell all these things? It doesn’t really matter. There is one sure thing about eaters of chocolate. They eat it because they like it.