三位数乘两位数，积是[ ] A．四位数 B．五位数 C．四位数或五位数

下列有关定性研究的描述，正确的是（）

A.注重事物的结果，而不是事物的过程

B.往往采用概率抽样的方法选择研究对象

C.常采用概率统计方法分析研究结果

D.结论一般不能外推

E.不适用于少数特殊人群的研究

沉降药物多用治的病证是（）。

A.表热证

B.表寒证

C.上焦证

D.中焦证

E.下焦证

阅读理解。

     I have been consistently opposed to feeding a baby regularly. As a doctor, mother and scientist in child development I believe there is nothing to recommend it, from the baby's point of view.

    Mothers, doctors and nurse alike have no idea of where a baby's blood sugar level lies. All we know is

that a low level is harmful to brain development and makes a baby easily annoyed. In this state, the baby is difficult to calm down and sleep is impossible. The baby asks for attention by crying and searching for food with its mouth.

    It is not just unkind but also dangerous to say a four-hourly feeding schedule will make a baby satisfied. The first of

the experts to advocate a strict clock-watching schedule was Dr Frederic Truby King, who was against

feeding in the

night. I've never heard anything so ridiculous. Baby feeding shouldn't follow a timetable set by the mum.

What is important is feeding a baby in the best way, though it may cause some inconvenience in the first

few weeks.

    Well, at last we have copper-bottomed research that supports demand feeding and points out the weaknesses of strictly timed feeding. The research finds out that babies who are fed on demand do better at

school at age 5, 7, 11 and 14, than babies fed according to the clock. By the age of 8, their IQ(智商)

scores are four to five percent higher than babies fed by a rigid timetable. This Research comes from

Oxford and Essex University using a sample(样本)of 10,419 children born in the early 1990s, taking

account of parental education, family income, a child's sex and age, the mother's health and feeling style.

These results don't surprise me. Feeding according to schedule runs the risk of harming the rapidly growing brain by taking no account of sinking blood sugar levels.

    I hope this research will put an end to advocating strictly timed baby feeding practices.

1. According to Paragraph 2, one reason why a baby cries is that it feels______.

A. sick        

B. upset      

C. sleepy      

D. hungry

2. What does the author think about Dr King?

A. He is strict.              

B. He is unkind.

C. He has the wrong idea.    

D. He sets a timetable for mothers.

3. The word "copper-bottomed" in Paragraph 4 is closest in meaning to _____.

A. basic          

B. reliable      

C. surprising          

D. interesting

4. What does the research tell us about feeding a baby on demand?

A. The baby will sleep well.

B. The baby will have its brain harmed.

C. The baby will have a low blood sugar level.

D. The baby will grow to be wiser by the age of 8.

5. The author supports deeding the baby______.

A. in the night              

B. every four hours

C. whenever it wants food    

D. according to its blood sugar level

参与通讯的细胞表面分子不包括（）

A.离子通道

B.IP3

C.糖蛋白

D.磷脂酰丝氨酸

E.黏附分子

世界贸易组织最重要的基本原则是（）

A.公平竞争与公平贸易原则

B.市场准入原则

C.互惠原则

D.非歧视原则